/*
* Copyright (C) 2015 Mellanox Technologies Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <ipxe/pci.h>
#include <ipxe/malloc.h>
#include <ipxe/umalloc.h>
#include <ipxe/if_ether.h>
#include <ipxe/ethernet.h>
#include <ipxe/vlan.h>
#include <ipxe/io.h>
#include "flexboot_nodnic.h"
#include "mlx_utils/include/public/mlx_types.h"
#include "mlx_utils/include/public/mlx_utils.h"
#include "mlx_utils/include/public/mlx_bail.h"
#include "mlx_nodnic/include/mlx_cmd.h"
#include "mlx_utils/include/public/mlx_memory.h"
#include "mlx_utils/include/public/mlx_pci.h"
#include "mlx_nodnic/include/mlx_device.h"
#include "mlx_nodnic/include/mlx_port.h"
#include <byteswap.h>
#include <usr/ifmgmt.h>
#include "mlx_utils/mlx_lib/mlx_nvconfig/mlx_nvconfig.h"
#include "mlx_utils/mlx_lib/mlx_nvconfig/mlx_nvconfig_defaults.h"
#include "mlx_utils/include/public/mlx_pci_gw.h"
#include "mlx_utils/mlx_lib/mlx_vmac/mlx_vmac.h"
#include "mlx_utils/mlx_lib/mlx_mtu/mlx_mtu.h"
/***************************************************************************
*
* Completion queue operations
*
***************************************************************************
*/
static int flexboot_nodnic_arm_cq ( struct flexboot_nodnic_port *port ) {
#ifndef DEVICE_CX3
mlx_uint32 val32 = 0;
union arm_cq_uar cq_uar;
#define ARM_CQ_UAR_CQ_CI_MASK 0xffffff
#define ARM_CQ_UAR_CMDSN_MASK 3
#define ARM_CQ_UAR_CMDSN_OFFSET 28
#define ARM_CQ_UAR_CQ_CI_OFFSET 0x20
if ( port->port_priv.device->device_cap.support_bar_cq_ctrl ) {
cq_uar.dword[0] = cpu_to_be32((port->eth_cq->next_idx & ARM_CQ_UAR_CQ_CI_MASK) |
((port->cmdsn++ & ARM_CQ_UAR_CMDSN_MASK) << ARM_CQ_UAR_CMDSN_OFFSET));
cq_uar.dword[1] = cpu_to_be32(port->eth_cq->cqn);
wmb();
writeq(cq_uar.qword, port->port_priv.device->uar.virt + ARM_CQ_UAR_CQ_CI_OFFSET);
port->port_priv.arm_cq_doorbell_record->dword[0] = cq_uar.dword[1];
port->port_priv.arm_cq_doorbell_record->dword[1] = cq_uar.dword[0];
} else {
val32 = ( port->eth_cq->next_idx & 0xffffff );
if ( nodnic_port_set ( & port->port_priv, nodnic_port_option_arm_cq, val32 ) ) {
MLX_DEBUG_ERROR( port->port_priv.device, "Failed to arm the CQ\n" );
return MLX_FAILED;
}
}
#else
mlx_utils *utils = port->port_priv.device->utils;
nodnic_port_data_flow_gw *ptr = port->port_priv.data_flow_gw;
mlx_uint32 data = 0;
mlx_uint32 val = 0;
if ( port->port_priv.device->device_cap.crspace_doorbells == 0 ) {
val = ( port->eth_cq->next_idx & 0xffff );
if ( nodnic_port_set ( & port->port_priv, nodnic_port_option_arm_cq, val ) ) {
MLX_DEBUG_ERROR( port->port_priv.device, "Failed to arm the CQ\n" );
return MLX_FAILED;
}
} else {
/* Arming the CQ with CQ CI should be with this format -
* 16 bit - CQ CI - same endianness as the FW (don't swap bytes)
* 15 bit - reserved
* 1 bit - arm CQ - must correct the endianness with the reserved above */
data = ( ( ( port->eth_cq->next_idx & 0xffff ) << 16 ) | 0x0080 );
/* Write the new index and update FW that new data was submitted */
mlx_pci_mem_write ( utils, MlxPciWidthUint32, 0,
( mlx_uintn ) & ( ptr->armcq_cq_ci_dword ), 1, &data );
}
#endif
return 0;
}
/**
* Create completion queue
*
* @v ibdev Infiniband device
* @v cq Completion queue
* @ret rc Return status code
*/
static int flexboot_nodnic_create_cq ( struct ib_device *ibdev ,
struct ib_completion_queue *cq ) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
struct flexboot_nodnic_completion_queue *flexboot_nodnic_cq;
mlx_status status = MLX_SUCCESS;
mlx_uint32 cqn;
flexboot_nodnic_cq = (struct flexboot_nodnic_completion_queue *)
zalloc(sizeof(*flexboot_nodnic_cq));
if ( flexboot_nodnic_cq == NULL ) {
status = MLX_OUT_OF_RESOURCES;
goto qp_alloc_err;
}
status = nodnic_port_create_cq(&port->port_priv,
cq->num_cqes *
flexboot_nodnic->callbacks->get_cqe_size(),
&flexboot_nodnic_cq->nodnic_completion_queue
);
MLX_FATAL_CHECK_STATUS(status, create_err,
"nodnic_port_create_cq failed");
flexboot_nodnic->callbacks->cqe_set_owner(
flexboot_nodnic_cq->nodnic_completion_queue->cq_virt,
cq->num_cqes);
if ( flexboot_nodnic->device_priv.device_cap.support_bar_cq_ctrl ) {
status = nodnic_port_query(&port->port_priv,
nodnic_port_option_cq_n_index,
(mlx_uint32 *)&cqn );
MLX_FATAL_CHECK_STATUS(status, read_cqn_err,
"failed to query cqn");
cq->cqn = cqn;
}
ib_cq_set_drvdata ( cq, flexboot_nodnic_cq );
return status;
read_cqn_err:
create_err:
free(flexboot_nodnic_cq);
qp_alloc_err:
return status;
}
/**
* Destroy completion queue
*
* @v ibdev Infiniband device
* @v cq Completion queue
*/
static void flexboot_nodnic_destroy_cq ( struct ib_device *ibdev ,
struct ib_completion_queue *cq ) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
struct flexboot_nodnic_completion_queue *flexboot_nodnic_cq = ib_cq_get_drvdata ( cq );
nodnic_port_destroy_cq(&port->port_priv,
flexboot_nodnic_cq->nodnic_completion_queue);
free(flexboot_nodnic_cq);
}
static
struct ib_work_queue * flexboot_nodnic_find_wq ( struct ib_device *ibdev ,
struct ib_completion_queue *cq,
unsigned long qpn, int is_send ) {
struct ib_work_queue *wq;
struct flexboot_nodnic_queue_pair *flexboot_nodnic_qp;
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
struct nodnic_ring *ring;
mlx_uint32 out_qpn;
list_for_each_entry ( wq, &cq->work_queues, list ) {
flexboot_nodnic_qp = ib_qp_get_drvdata ( wq->qp );
if( wq->is_send == is_send && wq->is_send == TRUE ) {
ring = &flexboot_nodnic_qp->nodnic_queue_pair->send.nodnic_ring;
} else if( wq->is_send == is_send && wq->is_send == FALSE ) {
ring = &flexboot_nodnic_qp->nodnic_queue_pair->receive.nodnic_ring;
} else {
continue;
}
nodnic_port_get_qpn(&port->port_priv, ring, &out_qpn);
if ( out_qpn == qpn )
return wq;
}
return NULL;
}
/**
* Handle completion
*
* @v ibdev Infiniband device
* @v cq Completion queue
* @v cqe Hardware completion queue entry
* @ret rc Return status code
*/
static int flexboot_nodnic_complete ( struct ib_device *ibdev,
struct ib_completion_queue *cq,
struct cqe_data *cqe_data ) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct ib_work_queue *wq;
struct ib_queue_pair *qp;
struct io_buffer *iobuf;
struct ib_address_vector recv_dest;
struct ib_address_vector recv_source;
unsigned long qpn;
unsigned long wqe_idx;
unsigned long wqe_idx_mask;
size_t len;
int rc = 0;
/* Parse completion */
qpn = cqe_data->qpn;
if ( cqe_data->is_error == TRUE ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p CQN %#lx syndrome %x vendor %x\n",
flexboot_nodnic, cq->cqn, cqe_data->syndrome,
cqe_data->vendor_err_syndrome );
rc = -EIO;
/* Don't return immediately; propagate error to completer */
}
/* Identify work queue */
wq = flexboot_nodnic_find_wq( ibdev, cq, qpn, cqe_data->is_send );
if ( wq == NULL ) {
DBGC ( flexboot_nodnic,
"flexboot_nodnic %p CQN %#lx unknown %s QPN %#lx\n",
flexboot_nodnic, cq->cqn,
( cqe_data->is_send ? "send" : "recv" ), qpn );
return -EIO;
}
qp = wq->qp;
/* Identify work queue entry */
wqe_idx = cqe_data->wqe_counter;
wqe_idx_mask = ( wq->num_wqes - 1 );
DBGCP ( flexboot_nodnic,
"NODNIC %p CQN %#lx QPN %#lx %s WQE %#lx completed:\n",
flexboot_nodnic, cq->cqn, qp->qpn,
( cqe_data->is_send ? "send" : "recv" ),
wqe_idx );
/* Identify I/O buffer */
iobuf = wq->iobufs[wqe_idx & wqe_idx_mask];
if ( iobuf == NULL ) {
DBGC ( flexboot_nodnic,
"NODNIC %p CQN %#lx QPN %#lx empty %s WQE %#lx\n",
flexboot_nodnic, cq->cqn, qp->qpn,
( cqe_data->is_send ? "send" : "recv" ), wqe_idx );
return -EIO;
}
wq->iobufs[wqe_idx & wqe_idx_mask] = NULL;
if ( cqe_data->is_send == TRUE ) {
/* Hand off to completion handler */
ib_complete_send ( ibdev, qp, iobuf, rc );
} else if ( rc != 0 ) {
/* Propagate error to receive completion handler */
ib_complete_recv ( ibdev, qp, NULL, NULL, iobuf, rc );
} else {
/* Set received length */
len = cqe_data->byte_cnt;
assert ( len <= iob_tailroom ( iobuf ) );
iob_put ( iobuf, len );
memset ( &recv_dest, 0, sizeof ( recv_dest ) );
recv_dest.qpn = qpn;
memset ( &recv_source, 0, sizeof ( recv_source ) );
switch ( qp->type ) {
case IB_QPT_SMI:
case IB_QPT_GSI:
case IB_QPT_UD:
case IB_QPT_RC:
break;
case IB_QPT_ETH:
break;
default:
assert ( 0 );
return -EINVAL;
}
/* Hand off to completion handler */
ib_complete_recv ( ibdev, qp, &recv_dest,
&recv_source, iobuf, rc );
}
return rc;
}
/**
* Poll completion queue
*
* @v ibdev Infiniband device
* @v cq Completion queues
*/
static void flexboot_nodnic_poll_cq ( struct ib_device *ibdev,
struct ib_completion_queue *cq) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_completion_queue *flexboot_nodnic_cq = ib_cq_get_drvdata ( cq );
void *cqe;
mlx_size cqe_size;
struct cqe_data cqe_data;
unsigned int cqe_idx_mask;
int rc;
cqe_size = flexboot_nodnic->callbacks->get_cqe_size();
while ( TRUE ) {
/* Look for completion entry */
cqe_idx_mask = ( cq->num_cqes - 1 );
cqe = ((uint8_t *)flexboot_nodnic_cq->nodnic_completion_queue->cq_virt) +
cqe_size * (cq->next_idx & cqe_idx_mask);
/* TODO: check fill_completion */
flexboot_nodnic->callbacks->fill_completion(cqe, &cqe_data);
if ( cqe_data.owner ^
( ( cq->next_idx & cq->num_cqes ) ? 1 : 0 ) ) {
/* Entry still owned by hardware; end of poll */
break;
}
/* Handle completion */
rc = flexboot_nodnic_complete ( ibdev, cq, &cqe_data );
if ( rc != 0 ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p CQN %#lx failed to complete: %s\n",
flexboot_nodnic, cq->cqn, strerror ( rc ) );
DBGC_HDA ( flexboot_nodnic, virt_to_phys ( cqe ),
cqe, sizeof ( *cqe ) );
}
/* Update completion queue's index */
cq->next_idx++;
}
}
/***************************************************************************
*
* Queue pair operations
*
***************************************************************************
*/
/**
* Create queue pair
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @ret rc Return status code
*/
static int flexboot_nodnic_create_qp ( struct ib_device *ibdev,
struct ib_queue_pair *qp ) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
struct flexboot_nodnic_queue_pair *flexboot_nodnic_qp;
mlx_status status = MLX_SUCCESS;
flexboot_nodnic_qp = (struct flexboot_nodnic_queue_pair *)zalloc(sizeof(*flexboot_nodnic_qp));
if ( flexboot_nodnic_qp == NULL ) {
status = MLX_OUT_OF_RESOURCES;
goto qp_alloc_err;
}
status = nodnic_port_create_qp(&port->port_priv, qp->type,
qp->send.num_wqes * sizeof(struct nodnic_send_wqbb),
qp->send.num_wqes,
qp->recv.num_wqes * sizeof(struct nodnic_recv_wqe),
qp->recv.num_wqes,
&flexboot_nodnic_qp->nodnic_queue_pair);
MLX_FATAL_CHECK_STATUS(status, create_err,
"nodnic_port_create_qp failed");
ib_qp_set_drvdata ( qp, flexboot_nodnic_qp );
return status;
create_err:
free(flexboot_nodnic_qp);
qp_alloc_err:
return status;
}
/**
* Modify queue pair
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @ret rc Return status code
*/
static int flexboot_nodnic_modify_qp ( struct ib_device *ibdev __unused,
struct ib_queue_pair *qp __unused) {
/*not needed*/
return 0;
}
/**
* Destroy queue pair
*
* @v ibdev Infiniband device
* @v qp Queue pair
*/
static void flexboot_nodnic_destroy_qp ( struct ib_device *ibdev,
struct ib_queue_pair *qp ) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
struct flexboot_nodnic_queue_pair *flexboot_nodnic_qp = ib_qp_get_drvdata ( qp );
nodnic_port_destroy_qp(&port->port_priv, qp->type,
flexboot_nodnic_qp->nodnic_queue_pair);
free(flexboot_nodnic_qp);
}
/***************************************************************************
*
* Work request operations
*
***************************************************************************
*/
/**
* 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 flexboot_nodnic_post_send ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct ib_address_vector *av,
struct io_buffer *iobuf) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_queue_pair *flexboot_nodnic_qp = ib_qp_get_drvdata ( qp );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
struct ib_work_queue *wq = &qp->send;
struct nodnic_send_wqbb *wqbb;
nodnic_qp *nodnic_qp = flexboot_nodnic_qp->nodnic_queue_pair;
struct nodnic_send_ring *send_ring = &nodnic_qp->send;
mlx_status status = MLX_SUCCESS;
unsigned int wqe_idx_mask;
unsigned long wqe_idx;
if ( ( port->port_priv.dma_state == FALSE ) ||
( port->port_priv.port_state & NODNIC_PORT_DISABLING_DMA ) ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic DMA disabled\n");
status = -ENETDOWN;
goto post_send_done;
}
/* Allocate work queue entry */
wqe_idx = wq->next_idx;
wqe_idx_mask = ( wq->num_wqes - 1 );
if ( wq->iobufs[wqe_idx & wqe_idx_mask] ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p QPN %#lx send queue full\n",
flexboot_nodnic, qp->qpn );
status = -ENOBUFS;
goto post_send_done;
}
wqbb = &send_ring->wqe_virt[wqe_idx & wqe_idx_mask];
wq->iobufs[wqe_idx & wqe_idx_mask] = iobuf;
assert ( flexboot_nodnic->callbacks->
fill_send_wqe[qp->type] != NULL );
status = flexboot_nodnic->callbacks->
fill_send_wqe[qp->type] ( ibdev, qp, av, iobuf,
wqbb, wqe_idx );
if ( status != 0 ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p QPN %#lx fill send wqe failed\n",
flexboot_nodnic, qp->qpn );
goto post_send_done;
}
wq->next_idx++;
status = port->port_priv.send_doorbell ( &port->port_priv,
&send_ring->nodnic_ring, ( mlx_uint16 ) wq->next_idx );
if ( flexboot_nodnic->callbacks->tx_uar_send_doorbell_fn ) {
flexboot_nodnic->callbacks->tx_uar_send_doorbell_fn ( ibdev, wqbb );
}
if ( status != 0 ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p ring send doorbell failed\n", flexboot_nodnic );
}
post_send_done:
return status;
}
/**
* 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 flexboot_nodnic_post_recv ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct io_buffer *iobuf ) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_queue_pair *flexboot_nodnic_qp = ib_qp_get_drvdata ( qp );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
struct ib_work_queue *wq = &qp->recv;
nodnic_qp *nodnic_qp = flexboot_nodnic_qp->nodnic_queue_pair;
struct nodnic_recv_ring *recv_ring = &nodnic_qp->receive;
struct nodnic_recv_wqe *wqe;
unsigned int wqe_idx_mask;
mlx_status status = MLX_SUCCESS;
/* Allocate work queue entry */
wqe_idx_mask = ( wq->num_wqes - 1 );
if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) {
DBGC ( flexboot_nodnic,
"flexboot_nodnic %p QPN %#lx receive queue full\n",
flexboot_nodnic, qp->qpn );
status = -ENOBUFS;
goto post_recv_done;
}
wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf;
wqe = &((struct nodnic_recv_wqe*)recv_ring->wqe_virt)[wq->next_idx & wqe_idx_mask];
MLX_FILL_1 ( &wqe->data[0], 0, byte_count, iob_tailroom ( iobuf ) );
MLX_FILL_1 ( &wqe->data[0], 1, l_key, flexboot_nodnic->device_priv.lkey );
MLX_FILL_H ( &wqe->data[0], 2,
local_address_h, virt_to_bus ( iobuf->data ) );
MLX_FILL_1 ( &wqe->data[0], 3,
local_address_l, virt_to_bus ( iobuf->data ) );
wq->next_idx++;
status = port->port_priv.recv_doorbell ( &port->port_priv,
&recv_ring->nodnic_ring, ( mlx_uint16 ) wq->next_idx );
if ( status != 0 ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p ring receive doorbell failed\n", flexboot_nodnic );
}
post_recv_done:
return status;
}
/***************************************************************************
*
* Event queues
*
***************************************************************************
*/
static void flexboot_nodnic_poll_eq ( struct ib_device *ibdev ) {
struct flexboot_nodnic *flexboot_nodnic;
struct flexboot_nodnic_port *port;
struct net_device *netdev;
nodnic_port_state state = 0;
mlx_status status;
if ( ! ibdev ) {
DBG ( "%s: ibdev = NULL!!!\n", __FUNCTION__ );
return;
}
flexboot_nodnic = ib_get_drvdata ( ibdev );
port = &flexboot_nodnic->port[ibdev->port - 1];
netdev = port->netdev;
if ( ! netdev_is_open ( netdev ) ) {
DBG2( "%s: port %d is closed\n", __FUNCTION__, port->ibdev->port );
return;
}
/* we don't poll EQ. Just poll link status if it's not active */
if ( ! netdev_link_ok ( netdev ) ) {
status = nodnic_port_get_state ( &port->port_priv, &state );
MLX_FATAL_CHECK_STATUS(status, state_err, "nodnic_port_get_state failed");
if ( state == nodnic_port_state_active ) {
DBG( "%s: port %d physical link is up\n", __FUNCTION__,
port->ibdev->port );
port->type->state_change ( flexboot_nodnic, port, 1 );
}
}
state_err:
return;
}
/***************************************************************************
*
* Multicast group operations
*
***************************************************************************
*/
static int flexboot_nodnic_mcast_attach ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
union ib_gid *gid) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
mlx_mac_address mac;
mlx_status status = MLX_SUCCESS;
switch (qp->type) {
case IB_QPT_ETH:
memcpy(&mac, &gid, sizeof(mac));
status = nodnic_port_add_mac_filter(&port->port_priv, mac);
MLX_CHECK_STATUS(flexboot_nodnic->device_priv, status, mac_err,
"nodnic_port_add_mac_filter failed");
break;
default:
break;
}
mac_err:
return status;
}
static void flexboot_nodnic_mcast_detach ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
union ib_gid *gid ) {
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
struct flexboot_nodnic_port *port = &flexboot_nodnic->port[ibdev->port - 1];
mlx_mac_address mac;
mlx_status status = MLX_SUCCESS;
switch (qp->type) {
case IB_QPT_ETH:
memcpy(&mac, &gid, sizeof(mac));
status = nodnic_port_remove_mac_filter(&port->port_priv, mac);
MLX_CHECK_STATUS(flexboot_nodnic->device_priv, status, mac_err,
"nodnic_port_remove_mac_filter failed");
break;
default:
break;
}
mac_err:
return;
}
/***************************************************************************
*
* Infiniband link-layer operations
*
***************************************************************************
*/
/**
* Initialise Infiniband link
*
* @v ibdev Infiniband device
* @ret rc Return status code
*/
static int flexboot_nodnic_ib_open ( struct ib_device *ibdev __unused) {
int rc = 0;
/*TODO: add implementation*/
return rc;
}
/**
* Close Infiniband link
*
* @v ibdev Infiniband device
*/
static void flexboot_nodnic_ib_close ( struct ib_device *ibdev __unused) {
/*TODO: add implementation*/
}
/**
* Inform embedded subnet management agent of a received MAD
*
* @v ibdev Infiniband device
* @v mad MAD
* @ret rc Return status code
*/
static int flexboot_nodnic_inform_sma ( struct ib_device *ibdev __unused,
union ib_mad *mad __unused) {
/*TODO: add implementation*/
return 0;
}
/** flexboot_nodnic Infiniband operations */
static struct ib_device_operations flexboot_nodnic_ib_operations = {
.create_cq = flexboot_nodnic_create_cq,
.destroy_cq = flexboot_nodnic_destroy_cq,
.create_qp = flexboot_nodnic_create_qp,
.modify_qp = flexboot_nodnic_modify_qp,
.destroy_qp = flexboot_nodnic_destroy_qp,
.post_send = flexboot_nodnic_post_send,
.post_recv = flexboot_nodnic_post_recv,
.poll_cq = flexboot_nodnic_poll_cq,
.poll_eq = flexboot_nodnic_poll_eq,
.open = flexboot_nodnic_ib_open,
.close = flexboot_nodnic_ib_close,
.mcast_attach = flexboot_nodnic_mcast_attach,
.mcast_detach = flexboot_nodnic_mcast_detach,
.set_port_info = flexboot_nodnic_inform_sma,
.set_pkey_table = flexboot_nodnic_inform_sma,
};
/***************************************************************************
*
*
*
***************************************************************************
*/
#define FLEX_NODNIC_TX_POLL_TOUT 500000
#define FLEX_NODNIC_TX_POLL_USLEEP 10
static void flexboot_nodnic_complete_all_tx ( struct flexboot_nodnic_port *port ) {
struct ib_device *ibdev = port->ibdev;
struct ib_completion_queue *cq;
struct ib_work_queue *wq;
int keep_polling = 0;
int timeout = FLEX_NODNIC_TX_POLL_TOUT;
list_for_each_entry ( cq, &ibdev->cqs, list ) {
do {
ib_poll_cq ( ibdev, cq );
keep_polling = 0;
list_for_each_entry ( wq, &cq->work_queues, list ) {
if ( wq->is_send )
keep_polling += ( wq->fill > 0 );
}
udelay ( FLEX_NODNIC_TX_POLL_USLEEP );
} while ( keep_polling && ( timeout-- > 0 ) );
}
}
static void flexboot_nodnic_port_disable_dma ( struct flexboot_nodnic_port *port ) {
nodnic_port_priv *port_priv = & ( port->port_priv );
mlx_status status;
if ( ! ( port_priv->port_state & NODNIC_PORT_OPENED ) )
return;
port_priv->port_state |= NODNIC_PORT_DISABLING_DMA;
flexboot_nodnic_complete_all_tx ( port );
if ( ( status = nodnic_port_disable_dma ( port_priv ) ) ) {
MLX_DEBUG_WARN ( port, "Failed to disable DMA %d\n", status );
}
port_priv->port_state &= ~NODNIC_PORT_DISABLING_DMA;
}
/***************************************************************************
*
* Ethernet operation
*
***************************************************************************
*/
/** Number of flexboot_nodnic Ethernet send work queue entries */
#define FLEXBOOT_NODNIC_ETH_NUM_SEND_WQES 64
/** Number of flexboot_nodnic Ethernet receive work queue entries */
#define FLEXBOOT_NODNIC_ETH_NUM_RECV_WQES 64
/** flexboot nodnic Ethernet queue pair operations */
static struct ib_queue_pair_operations flexboot_nodnic_eth_qp_op = {
.alloc_iob = alloc_iob,
};
/**
* Transmit packet via flexboot_nodnic Ethernet device
*
* @v netdev Network device
* @v iobuf I/O buffer
* @ret rc Return status code
*/
static int flexboot_nodnic_eth_transmit ( struct net_device *netdev,
struct io_buffer *iobuf) {
struct flexboot_nodnic_port *port = netdev->priv;
struct ib_device *ibdev = port->ibdev;
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
int rc;
rc = ib_post_send ( ibdev, port->eth_qp, NULL, iobuf);
/* Transmit packet */
if ( rc != 0) {
DBGC ( flexboot_nodnic, "NODNIC %p port %d could not transmit: %s\n",
flexboot_nodnic, ibdev->port, strerror ( rc ) );
return rc;
}
return 0;
}
/**
* Handle flexboot_nodnic Ethernet device send completion
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v iobuf I/O buffer
* @v rc Completion status code
*/
static void flexboot_nodnic_eth_complete_send ( struct ib_device *ibdev __unused,
struct ib_queue_pair *qp,
struct io_buffer *iobuf,
int rc) {
struct net_device *netdev = ib_qp_get_ownerdata ( qp );
netdev_tx_complete_err ( netdev, iobuf, rc );
}
/**
* Handle flexboot_nodnic Ethernet device receive completion
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v av Address vector, or NULL
* @v iobuf I/O buffer
* @v rc Completion status code
*/
static void flexboot_nodnic_eth_complete_recv ( struct ib_device *ibdev __unused,
struct ib_queue_pair *qp,
struct ib_address_vector *dest __unused,
struct ib_address_vector *source,
struct io_buffer *iobuf,
int rc) {
struct net_device *netdev = ib_qp_get_ownerdata ( qp );
if ( rc != 0 ) {
DBG ( "Received packet with error\n" );
netdev_rx_err ( netdev, iobuf, rc );
return;
}
if ( source == NULL ) {
DBG ( "Received packet without address vector\n" );
netdev_rx_err ( netdev, iobuf, -ENOTTY );
return;
}
netdev_rx ( netdev, iobuf );
}
/** flexboot_nodnic Ethernet device completion operations */
static struct ib_completion_queue_operations flexboot_nodnic_eth_cq_op = {
.complete_send = flexboot_nodnic_eth_complete_send,
.complete_recv = flexboot_nodnic_eth_complete_recv,
};
/**
* Poll flexboot_nodnic Ethernet device
*
* @v netdev Network device
*/
static void flexboot_nodnic_eth_poll ( struct net_device *netdev) {
struct flexboot_nodnic_port *port = netdev->priv;
struct ib_device *ibdev = port->ibdev;
ib_poll_eq ( ibdev );
}
/**
* Open flexboot_nodnic Ethernet device
*
* @v netdev Network device
* @ret rc Return status code
*/
static int flexboot_nodnic_eth_open ( struct net_device *netdev ) {
struct flexboot_nodnic_port *port = netdev->priv;
struct ib_device *ibdev = port->ibdev;
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
mlx_status status = MLX_SUCCESS;
struct ib_completion_queue *dummy_cq = NULL;
struct flexboot_nodnic_queue_pair *flexboot_nodnic_qp = NULL;
mlx_uint64 cq_size = 0;
mlx_uint32 qpn = 0;
nodnic_port_state state = nodnic_port_state_down;
int rc;
if ( port->port_priv.port_state & NODNIC_PORT_OPENED ) {
DBGC ( flexboot_nodnic, "%s: port %d is already opened\n",
__FUNCTION__, port->ibdev->port );
return 0;
}
port->port_priv.port_state |= NODNIC_PORT_OPENED;
dummy_cq = zalloc ( sizeof ( struct ib_completion_queue ) );
if ( dummy_cq == NULL ) {
DBGC ( flexboot_nodnic, "%s: Failed to allocate dummy CQ\n", __FUNCTION__ );
status = MLX_OUT_OF_RESOURCES;
goto err_create_dummy_cq;
}
INIT_LIST_HEAD ( &dummy_cq->work_queues );
if ( ( rc = ib_create_qp ( ibdev, IB_QPT_ETH,
FLEXBOOT_NODNIC_ETH_NUM_SEND_WQES, dummy_cq,
FLEXBOOT_NODNIC_ETH_NUM_RECV_WQES, dummy_cq,
&flexboot_nodnic_eth_qp_op, netdev->name,
&port->eth_qp ) ) != 0 ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p port %d could not create queue pair\n",
flexboot_nodnic, ibdev->port );
status = MLX_OUT_OF_RESOURCES;
goto err_create_qp;
}
ib_qp_set_ownerdata ( port->eth_qp, netdev );
status = nodnic_port_get_cq_size(&port->port_priv, &cq_size);
MLX_FATAL_CHECK_STATUS(status, get_cq_size_err,
"nodnic_port_get_cq_size failed");
if ( ( rc = ib_create_cq ( ibdev, cq_size, &flexboot_nodnic_eth_cq_op,
&port->eth_cq ) ) != 0 ) {
DBGC ( flexboot_nodnic,
"flexboot_nodnic %p port %d could not create completion queue\n",
flexboot_nodnic, ibdev->port );
status = MLX_OUT_OF_RESOURCES;
goto err_create_cq;
}
port->eth_qp->send.cq = port->eth_cq;
list_del(&port->eth_qp->send.list);
list_add ( &port->eth_qp->send.list, &port->eth_cq->work_queues );
port->eth_qp->recv.cq = port->eth_cq;
port->cmdsn = 0;
list_del(&port->eth_qp->recv.list);
list_add ( &port->eth_qp->recv.list, &port->eth_cq->work_queues );
status = nodnic_port_allocate_eq(&port->port_priv,
flexboot_nodnic->device_priv.device_cap.log_working_buffer_size);
MLX_FATAL_CHECK_STATUS(status, eq_alloc_err,
"nodnic_port_allocate_eq failed");
status = nodnic_port_init(&port->port_priv);
MLX_FATAL_CHECK_STATUS(status, init_err,
"nodnic_port_init failed");
/* update qp - qpn */
flexboot_nodnic_qp = ib_qp_get_drvdata ( port->eth_qp );
status = nodnic_port_get_qpn(&port->port_priv,
&flexboot_nodnic_qp->nodnic_queue_pair->send.nodnic_ring,
&qpn);
MLX_FATAL_CHECK_STATUS(status, qpn_err,
"nodnic_port_get_qpn failed");
port->eth_qp->qpn = qpn;
/* Fill receive rings */
ib_refill_recv ( ibdev, port->eth_qp );
status = nodnic_port_enable_dma(&port->port_priv);
MLX_FATAL_CHECK_STATUS(status, dma_err,
"nodnic_port_enable_dma failed");
if (flexboot_nodnic->device_priv.device_cap.support_promisc_filter) {
status = nodnic_port_set_promisc(&port->port_priv, TRUE);
MLX_FATAL_CHECK_STATUS(status, promisc_err,
"nodnic_port_set_promisc failed");
}
status = nodnic_port_get_state(&port->port_priv, &state);
MLX_FATAL_CHECK_STATUS(status, state_err,
"nodnic_port_get_state failed");
port->type->state_change (
flexboot_nodnic, port, state == nodnic_port_state_active );
DBGC ( flexboot_nodnic, "%s: port %d opened (link is %s)\n",
__FUNCTION__, port->ibdev->port,
( ( state == nodnic_port_state_active ) ? "Up" : "Down" ) );
free(dummy_cq);
return 0;
state_err:
promisc_err:
dma_err:
qpn_err:
nodnic_port_close(&port->port_priv);
init_err:
nodnic_port_free_eq(&port->port_priv);
eq_alloc_err:
err_create_cq:
get_cq_size_err:
ib_destroy_qp(ibdev, port->eth_qp );
err_create_qp:
free(dummy_cq);
err_create_dummy_cq:
port->port_priv.port_state &= ~NODNIC_PORT_OPENED;
return status;
}
/**
* Close flexboot_nodnic Ethernet device
*
* @v netdev Network device
*/
static void flexboot_nodnic_eth_close ( struct net_device *netdev) {
struct flexboot_nodnic_port *port = netdev->priv;
struct ib_device *ibdev = port->ibdev;
struct flexboot_nodnic *flexboot_nodnic = ib_get_drvdata ( ibdev );
mlx_status status = MLX_SUCCESS;
if ( ! ( port->port_priv.port_state & NODNIC_PORT_OPENED ) ) {
DBGC ( flexboot_nodnic, "%s: port %d is already closed\n",
__FUNCTION__, port->ibdev->port );
return;
}
if (flexboot_nodnic->device_priv.device_cap.support_promisc_filter) {
if ( ( status = nodnic_port_set_promisc( &port->port_priv, FALSE ) ) ) {
DBGC ( flexboot_nodnic,
"nodnic_port_set_promisc failed (status = %d)\n", status );
}
}
flexboot_nodnic_port_disable_dma ( port );
port->port_priv.port_state &= ~NODNIC_PORT_OPENED;
port->type->state_change ( flexboot_nodnic, port, FALSE );
/* Close port */
status = nodnic_port_close(&port->port_priv);
if ( status != MLX_SUCCESS ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p port %d could not close port: %s\n",
flexboot_nodnic, ibdev->port, strerror ( status ) );
/* Nothing we can do about this */
}
ib_destroy_qp ( ibdev, port->eth_qp );
port->eth_qp = NULL;
ib_destroy_cq ( ibdev, port->eth_cq );
port->eth_cq = NULL;
nodnic_port_free_eq(&port->port_priv);
DBGC ( flexboot_nodnic, "%s: port %d closed\n", __FUNCTION__, port->ibdev->port );
}
void flexboot_nodnic_eth_irq ( struct net_device *netdev, int enable ) {
struct flexboot_nodnic_port *port = netdev->priv;
if ( enable ) {
if ( ( port->port_priv.port_state & NODNIC_PORT_OPENED ) &&
! ( port->port_priv.port_state & NODNIC_PORT_DISABLING_DMA ) ) {
flexboot_nodnic_arm_cq ( port );
} else {
/* do nothing */
}
} else {
nodnic_device_clear_int( port->port_priv.device );
}
}
/** flexboot_nodnic Ethernet network device operations */
static struct net_device_operations flexboot_nodnic_eth_operations = {
.open = flexboot_nodnic_eth_open,
.close = flexboot_nodnic_eth_close,
.transmit = flexboot_nodnic_eth_transmit,
.poll = flexboot_nodnic_eth_poll,
};
/**
* Register flexboot_nodnic Ethernet device
*/
static int flexboot_nodnic_register_netdev ( struct flexboot_nodnic *flexboot_nodnic,
struct flexboot_nodnic_port *port) {
mlx_status status = MLX_SUCCESS;
struct net_device *netdev;
struct ib_device *ibdev = port->ibdev;
union {
uint8_t bytes[8];
uint32_t dwords[2];
} mac;
/* Allocate network devices */
netdev = alloc_etherdev ( 0 );
if ( netdev == NULL ) {
DBGC ( flexboot_nodnic, "flexboot_nodnic %p port %d could not allocate net device\n",
flexboot_nodnic, ibdev->port );
status = MLX_OUT_OF_RESOURCES;
goto alloc_err;
}
port->netdev = netdev;
netdev_init ( netdev, &flexboot_nodnic_eth_operations );
netdev->dev = ibdev->dev;
netdev->priv = port;
status = nodnic_port_query(&port->port_priv,
nodnic_port_option_mac_high,
&mac.dwords[0]);
MLX_FATAL_CHECK_STATUS(status, mac_err,
"failed to query mac high");
status = nodnic_port_query(&port->port_priv,
nodnic_port_option_mac_low,
&mac.dwords[1]);
MLX_FATAL_CHECK_STATUS(status, mac_err,
"failed to query mac low");
mac.dwords[0] = htonl(mac.dwords[0]);
mac.dwords[1] = htonl(mac.dwords[1]);
memcpy ( netdev->hw_addr,
&mac.bytes[2], ETH_ALEN);
/* Register network device */
status = register_netdev ( netdev );
if ( status != MLX_SUCCESS ) {
DBGC ( flexboot_nodnic,
"flexboot_nodnic %p port %d could not register network device: %s\n",
flexboot_nodnic, ibdev->port, strerror ( status ) );
goto reg_err;
}
return status;
reg_err:
mac_err:
netdev_put ( netdev );
alloc_err:
return status;
}
/**
* Handle flexboot_nodnic Ethernet device port state change
*/
static void flexboot_nodnic_state_change_netdev ( struct flexboot_nodnic *flexboot_nodnic __unused,
struct flexboot_nodnic_port *port,
int link_up ) {
struct net_device *netdev = port->netdev;
if ( link_up )
netdev_link_up ( netdev );
else
netdev_link_down ( netdev );
}
/**
* Unregister flexboot_nodnic Ethernet device
*/
static void flexboot_nodnic_unregister_netdev ( struct flexboot_nodnic *flexboot_nodnic __unused,
struct flexboot_nodnic_port *port ) {
struct net_device *netdev = port->netdev;
unregister_netdev ( netdev );
netdev_nullify ( netdev );
netdev_put ( netdev );
}
/** flexboot_nodnic Ethernet port type */
static struct flexboot_nodnic_port_type flexboot_nodnic_port_type_eth = {
.register_dev = flexboot_nodnic_register_netdev,
.state_change = flexboot_nodnic_state_change_netdev,
.unregister_dev = flexboot_nodnic_unregister_netdev,
};
/***************************************************************************
*
* PCI interface helper functions
*
***************************************************************************
*/
static
mlx_status
flexboot_nodnic_allocate_infiniband_devices( struct flexboot_nodnic *flexboot_nodnic_priv ) {
mlx_status status = MLX_SUCCESS;
nodnic_device_priv *device_priv = &flexboot_nodnic_priv->device_priv;
struct pci_device *pci = flexboot_nodnic_priv->pci;
struct ib_device *ibdev = NULL;
unsigned int i = 0;
/* Allocate Infiniband devices */
for (; i < device_priv->device_cap.num_ports; i++) {
if ( ! ( flexboot_nodnic_priv->port_mask & ( i + 1 ) ) )
continue;
ibdev = alloc_ibdev(0);
if (ibdev == NULL) {
status = MLX_OUT_OF_RESOURCES;
goto err_alloc_ibdev;
}
flexboot_nodnic_priv->port[i].ibdev = ibdev;
ibdev->op = &flexboot_nodnic_ib_operations;
ibdev->dev = &pci->dev;
ibdev->port = ( FLEXBOOT_NODNIC_PORT_BASE + i);
ib_set_drvdata(ibdev, flexboot_nodnic_priv);
}
return status;
err_alloc_ibdev:
for ( i-- ; ( signed int ) i >= 0 ; i-- )
ibdev_put ( flexboot_nodnic_priv->port[i].ibdev );
return status;
}
static
mlx_status
flexboot_nodnic_thin_init_ports( struct flexboot_nodnic *flexboot_nodnic_priv ) {
mlx_status status = MLX_SUCCESS;
nodnic_device_priv *device_priv = &flexboot_nodnic_priv->device_priv;
nodnic_port_priv *port_priv = NULL;
unsigned int i = 0;
for ( i = 0; i < device_priv->device_cap.num_ports; i++ ) {
if ( ! ( flexboot_nodnic_priv->port_mask & ( i + 1 ) ) )
continue;
port_priv = &flexboot_nodnic_priv->port[i].port_priv;
status = nodnic_port_thin_init( device_priv, port_priv, i );
MLX_FATAL_CHECK_STATUS(status, thin_init_err,
"flexboot_nodnic_thin_init_ports failed");
}
thin_init_err:
return status;
}
static
mlx_status
flexboot_nodnic_set_ports_type ( struct flexboot_nodnic *flexboot_nodnic_priv ) {
mlx_status status = MLX_SUCCESS;
nodnic_device_priv *device_priv = &flexboot_nodnic_priv->device_priv;
nodnic_port_priv *port_priv = NULL;
nodnic_port_type type = NODNIC_PORT_TYPE_UNKNOWN;
unsigned int i = 0;
for ( i = 0 ; i < device_priv->device_cap.num_ports ; i++ ) {
if ( ! ( flexboot_nodnic_priv->port_mask & ( i + 1 ) ) )
continue;
port_priv = &flexboot_nodnic_priv->port[i].port_priv;
status = nodnic_port_get_type(port_priv, &type);
MLX_FATAL_CHECK_STATUS(status, type_err,
"nodnic_port_get_type failed");
switch ( type ) {
case NODNIC_PORT_TYPE_ETH:
DBGC ( flexboot_nodnic_priv, "Port %d type is Ethernet\n", i );
flexboot_nodnic_priv->port[i].type = &flexboot_nodnic_port_type_eth;
break;
case NODNIC_PORT_TYPE_IB:
DBGC ( flexboot_nodnic_priv, "Port %d type is Infiniband\n", i );
status = MLX_UNSUPPORTED;
goto type_err;
default:
DBGC ( flexboot_nodnic_priv, "Port %d type is unknown\n", i );
status = MLX_UNSUPPORTED;
goto type_err;
}
}
type_err:
return status;
}
static
mlx_status
flexboot_nodnic_ports_register_dev( struct flexboot_nodnic *flexboot_nodnic_priv ) {
mlx_status status = MLX_SUCCESS;
nodnic_device_priv *device_priv = &flexboot_nodnic_priv->device_priv;
struct flexboot_nodnic_port *port = NULL;
unsigned int i = 0;
for (; i < device_priv->device_cap.num_ports; i++) {
if ( ! ( flexboot_nodnic_priv->port_mask & ( i + 1 ) ) )
continue;
port = &flexboot_nodnic_priv->port[i];
status = port->type->register_dev ( flexboot_nodnic_priv, port );
MLX_FATAL_CHECK_STATUS(status, reg_err,
"port register_dev failed");
}
reg_err:
return status;
}
static
mlx_status
flexboot_nodnic_ports_unregister_dev ( struct flexboot_nodnic *flexboot_nodnic_priv ) {
struct flexboot_nodnic_port *port;
nodnic_device_priv *device_priv = &flexboot_nodnic_priv->device_priv;
int i = (device_priv->device_cap.num_ports - 1);
for (; i >= 0; i--) {
if ( ! ( flexboot_nodnic_priv->port_mask & ( i + 1 ) ) )
continue;
port = &flexboot_nodnic_priv->port[i];
port->type->unregister_dev(flexboot_nodnic_priv, port);
ibdev_put(flexboot_nodnic_priv->port[i].ibdev);
}
return MLX_SUCCESS;
}
/***************************************************************************
*
* flexboot nodnic interface
*
***************************************************************************
*/
__unused static void flexboot_nodnic_enable_dma ( struct flexboot_nodnic *nodnic ) {
nodnic_port_priv *port_priv;
mlx_status status;
int i;
for ( i = 0; i < nodnic->device_priv.device_cap.num_ports; i++ ) {
if ( ! ( nodnic->port_mask & ( i + 1 ) ) )
continue;
port_priv = & ( nodnic->port[i].port_priv );
if ( ! ( port_priv->port_state & NODNIC_PORT_OPENED ) )
continue;
if ( ( status = nodnic_port_enable_dma ( port_priv ) ) ) {
MLX_DEBUG_WARN ( nodnic, "Failed to enable DMA %d\n", status );
}
}
}
__unused static void flexboot_nodnic_disable_dma ( struct flexboot_nodnic *nodnic ) {
int i;
for ( i = 0; i < nodnic->device_priv.device_cap.num_ports; i++ ) {
if ( ! ( nodnic->port_mask & ( i + 1 ) ) )
continue;
flexboot_nodnic_port_disable_dma ( & ( nodnic->port[i] ) );
}
}
int flexboot_nodnic_is_supported ( struct pci_device *pci ) {
mlx_utils utils;
mlx_pci_gw_buffer buffer;
mlx_status status;
int is_supported = 0;
DBG ( "%s: start\n", __FUNCTION__ );
memset ( &utils, 0, sizeof ( utils ) );
status = mlx_utils_init ( &utils, pci );
MLX_CHECK_STATUS ( pci, status, utils_init_err, "mlx_utils_init failed" );
status = mlx_pci_gw_init ( &utils );
MLX_CHECK_STATUS ( pci, status, pci_gw_init_err, "mlx_pci_gw_init failed" );
status = mlx_pci_gw_read ( &utils, PCI_GW_SPACE_NODNIC,
NODNIC_NIC_INTERFACE_SUPPORTED_OFFSET, &buffer );
if ( status == MLX_SUCCESS ) {
buffer >>= NODNIC_NIC_INTERFACE_SUPPORTED_BIT;
is_supported = ( buffer & 0x1 );
}
mlx_pci_gw_teardown( &utils );
pci_gw_init_err:
mlx_utils_teardown(&utils);
utils_init_err:
DBG ( "%s: NODNIC is %s supported (status = %d)\n",
__FUNCTION__, ( is_supported ? "": "not" ), status );
return is_supported;
}
void flexboot_nodnic_copy_mac ( uint8_t mac_addr[], uint32_t low_byte,
uint16_t high_byte ) {
union mac_addr {
struct {
uint32_t low_byte;
uint16_t high_byte;
};
uint8_t mac_addr[ETH_ALEN];
} mac_addr_aux;
mac_addr_aux.high_byte = high_byte;
mac_addr_aux.low_byte = low_byte;
mac_addr[0] = mac_addr_aux.mac_addr[5];
mac_addr[1] = mac_addr_aux.mac_addr[4];
mac_addr[2] = mac_addr_aux.mac_addr[3];
mac_addr[3] = mac_addr_aux.mac_addr[2];
mac_addr[4] = mac_addr_aux.mac_addr[1];
mac_addr[5] = mac_addr_aux.mac_addr[0];
}
static mlx_status flexboot_nodnic_get_factory_mac (
struct flexboot_nodnic *flexboot_nodnic_priv, uint8_t port __unused ) {
struct mlx_vmac_query_virt_mac virt_mac;
mlx_status status;
memset ( & virt_mac, 0, sizeof ( virt_mac ) );
status = mlx_vmac_query_virt_mac ( flexboot_nodnic_priv->device_priv.utils,
&virt_mac );
if ( ! status ) {
DBGC ( flexboot_nodnic_priv, "NODNIC %p Failed to set the virtual MAC\n"
,flexboot_nodnic_priv );
}
return status;
}
/**
* Set port masking
*
* @v flexboot_nodnic nodnic device
* @ret rc Return status code
*/
static int flexboot_nodnic_set_port_masking ( struct flexboot_nodnic *flexboot_nodnic ) {
unsigned int i;
nodnic_device_priv *device_priv = &flexboot_nodnic->device_priv;
flexboot_nodnic->port_mask = 0;
for ( i = 0; i < device_priv->device_cap.num_ports; i++ ) {
flexboot_nodnic->port_mask |= (i + 1);
}
if ( ! flexboot_nodnic->port_mask ) {
/* No port was enabled */
DBGC ( flexboot_nodnic, "NODNIC %p No port was enabled for "
"booting\n", flexboot_nodnic );
return -ENETUNREACH;
}
return 0;
}
int init_mlx_utils ( mlx_utils **utils, struct pci_device *pci ) {
int rc = 0;
*utils = ( mlx_utils * ) zalloc ( sizeof ( mlx_utils ) );
if ( *utils == NULL ) {
DBGC ( utils, "%s: Failed to allocate utils\n", __FUNCTION__ );
rc = -1;
goto err_utils_alloc;
}
if ( mlx_utils_init ( *utils, pci ) ) {
DBGC ( utils, "%s: mlx_utils_init failed\n", __FUNCTION__ );
rc = -1;
goto err_utils_init;
}
if ( mlx_pci_gw_init ( *utils ) ){
DBGC ( utils, "%s: mlx_pci_gw_init failed\n", __FUNCTION__ );
rc = -1;
goto err_cmd_init;
}
return 0;
mlx_pci_gw_teardown ( *utils );
err_cmd_init:
mlx_utils_teardown ( *utils );
err_utils_init:
free ( *utils );
err_utils_alloc:
*utils = NULL;
return rc;
}
void free_mlx_utils ( mlx_utils **utils ) {
mlx_pci_gw_teardown ( *utils );
mlx_utils_teardown ( *utils );
free ( *utils );
*utils = NULL;
}
/**
* Initialise Nodnic PCI parameters
*
* @v hermon Nodnic device
*/
static int flexboot_nodnic_alloc_uar ( struct flexboot_nodnic *flexboot_nodnic ) {
mlx_status status = MLX_SUCCESS;
struct pci_device *pci = flexboot_nodnic->pci;
nodnic_uar *uar = &flexboot_nodnic->port[0].port_priv.device->uar;
if ( ! flexboot_nodnic->device_priv.device_cap.support_uar_tx_db ) {
DBGC ( flexboot_nodnic, "%s: tx db using uar is not supported \n", __FUNCTION__ );
return -ENOTSUP;
}
/* read uar offset then allocate */
if ( ( status = nodnic_port_set_send_uar_offset ( &flexboot_nodnic->port[0].port_priv ) ) ) {
DBGC ( flexboot_nodnic, "%s: nodnic_port_set_send_uar_offset failed,"
"status = %d\n", __FUNCTION__, status );
return -EINVAL;
}
uar->phys = ( pci_bar_start ( pci, FLEXBOOT_NODNIC_HCA_BAR ) + (mlx_uint32)uar->offset );
uar->virt = ( void * )( ioremap ( uar->phys, FLEXBOOT_NODNIC_PAGE_SIZE ) );
return status;
}
static int flexboot_nodnic_dealloc_uar ( struct flexboot_nodnic *flexboot_nodnic ) {
nodnic_uar *uar = &flexboot_nodnic->port[0].port_priv.device->uar;
if ( uar->virt ) {
iounmap( uar->virt );
uar->virt = NULL;
}
return MLX_SUCCESS;
}
int flexboot_nodnic_probe ( struct pci_device *pci,
struct flexboot_nodnic_callbacks *callbacks,
void *drv_priv __unused ) {
mlx_status status = MLX_SUCCESS;
struct flexboot_nodnic *flexboot_nodnic_priv = NULL;
nodnic_device_priv *device_priv = NULL;
int i = 0;
if ( ( pci == NULL ) || ( callbacks == NULL ) ) {
DBGC ( flexboot_nodnic_priv, "%s: Bad Parameter\n", __FUNCTION__ );
return -EINVAL;
}
flexboot_nodnic_priv = zalloc( sizeof ( *flexboot_nodnic_priv ) );
if ( flexboot_nodnic_priv == NULL ) {
DBGC ( flexboot_nodnic_priv, "%s: Failed to allocate priv data\n", __FUNCTION__ );
status = MLX_OUT_OF_RESOURCES;
goto device_err_alloc;
}
/* Register settings
* Note that pci->priv will be the device private data */
flexboot_nodnic_priv->pci = pci;
flexboot_nodnic_priv->callbacks = callbacks;
pci_set_drvdata ( pci, flexboot_nodnic_priv );
device_priv = &flexboot_nodnic_priv->device_priv;
/* init mlx utils */
status = init_mlx_utils ( & device_priv->utils, pci );
MLX_FATAL_CHECK_STATUS(status, err_utils_init,
"init_mlx_utils failed");
/* init device */
status = nodnic_device_init( device_priv );
MLX_FATAL_CHECK_STATUS(status, device_init_err,
"nodnic_device_init failed");
status = nodnic_device_get_cap( device_priv );
MLX_FATAL_CHECK_STATUS(status, get_cap_err,
"nodnic_device_get_cap failed");
if ( mlx_set_admin_mtu ( device_priv->utils, 1, EN_DEFAULT_ADMIN_MTU ) ) {
MLX_DEBUG_ERROR( device_priv->utils, "Failed to set admin mtu\n" );
}
status = flexboot_nodnic_set_port_masking ( flexboot_nodnic_priv );
MLX_FATAL_CHECK_STATUS(status, err_set_masking,
"flexboot_nodnic_set_port_masking failed");
status = flexboot_nodnic_allocate_infiniband_devices( flexboot_nodnic_priv );
MLX_FATAL_CHECK_STATUS(status, err_alloc_ibdev,
"flexboot_nodnic_allocate_infiniband_devices failed");
/* port init */
status = flexboot_nodnic_thin_init_ports( flexboot_nodnic_priv );
MLX_FATAL_CHECK_STATUS(status, err_thin_init_ports,
"flexboot_nodnic_thin_init_ports failed");
if ( ( status = flexboot_nodnic_alloc_uar ( flexboot_nodnic_priv ) ) ) {
DBGC(flexboot_nodnic_priv, "%s: flexboot_nodnic_alloc_uar failed"
" ( status = %d )\n",__FUNCTION__, status );
}
/* device reg */
status = flexboot_nodnic_set_ports_type( flexboot_nodnic_priv );
MLX_CHECK_STATUS( flexboot_nodnic_priv, status, err_set_ports_types,
"flexboot_nodnic_set_ports_type failed");
status = flexboot_nodnic_ports_register_dev( flexboot_nodnic_priv );
MLX_FATAL_CHECK_STATUS(status, reg_err,
"flexboot_nodnic_ports_register_dev failed");
for ( i = 0; i < device_priv->device_cap.num_ports; i++ ) {
if ( ! ( flexboot_nodnic_priv->port_mask & ( i + 1 ) ) )
continue;
flexboot_nodnic_get_factory_mac ( flexboot_nodnic_priv, i );
}
/* Update ETH operations with IRQ function if supported */
DBGC ( flexboot_nodnic_priv, "%s: %s IRQ function\n",
__FUNCTION__, ( callbacks->irq ? "Valid" : "No" ) );
flexboot_nodnic_eth_operations.irq = callbacks->irq;
return 0;
flexboot_nodnic_ports_unregister_dev ( flexboot_nodnic_priv );
reg_err:
err_set_ports_types:
flexboot_nodnic_dealloc_uar ( flexboot_nodnic_priv );
err_thin_init_ports:
err_alloc_ibdev:
err_set_masking:
get_cap_err:
nodnic_device_teardown ( device_priv );
device_init_err:
free_mlx_utils ( & device_priv->utils );
err_utils_init:
free ( flexboot_nodnic_priv );
device_err_alloc:
return status;
}
void flexboot_nodnic_remove ( struct pci_device *pci )
{
struct flexboot_nodnic *flexboot_nodnic_priv = pci_get_drvdata ( pci );
nodnic_device_priv *device_priv = & ( flexboot_nodnic_priv->device_priv );
flexboot_nodnic_dealloc_uar ( flexboot_nodnic_priv );
flexboot_nodnic_ports_unregister_dev ( flexboot_nodnic_priv );
nodnic_device_teardown( device_priv );
free_mlx_utils ( & device_priv->utils );
free( flexboot_nodnic_priv );
}
