2688 lines
65 KiB
C
2688 lines
65 KiB
C
/*
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* linux/drivers/net/ehea/ehea_main.c
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*
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* eHEA ethernet device driver for IBM eServer System p
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*
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* (C) Copyright IBM Corp. 2006
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*
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* Authors:
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* Christoph Raisch <raisch@de.ibm.com>
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* Jan-Bernd Themann <themann@de.ibm.com>
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* Thomas Klein <tklein@de.ibm.com>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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#include <linux/if.h>
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#include <linux/list.h>
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#include <linux/if_ether.h>
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#include <net/ip.h>
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#include "ehea.h"
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#include "ehea_qmr.h"
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#include "ehea_phyp.h"
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
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MODULE_DESCRIPTION("IBM eServer HEA Driver");
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MODULE_VERSION(DRV_VERSION);
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static int msg_level = -1;
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static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
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static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
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static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
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static int sq_entries = EHEA_DEF_ENTRIES_SQ;
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module_param(msg_level, int, 0);
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module_param(rq1_entries, int, 0);
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module_param(rq2_entries, int, 0);
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module_param(rq3_entries, int, 0);
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module_param(sq_entries, int, 0);
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MODULE_PARM_DESC(msg_level, "msg_level");
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MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
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"[2^x - 1], x = [6..14]. Default = "
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__MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
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MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
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"[2^x - 1], x = [6..14]. Default = "
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__MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
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MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
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"[2^x - 1], x = [6..14]. Default = "
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__MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
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MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
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"[2^x - 1], x = [6..14]. Default = "
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__MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
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void ehea_dump(void *adr, int len, char *msg) {
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int x;
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unsigned char *deb = adr;
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for (x = 0; x < len; x += 16) {
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printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
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deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
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deb += 16;
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}
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}
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static struct net_device_stats *ehea_get_stats(struct net_device *dev)
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{
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struct ehea_port *port = netdev_priv(dev);
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struct net_device_stats *stats = &port->stats;
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struct hcp_ehea_port_cb2 *cb2;
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u64 hret, rx_packets;
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int i;
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memset(stats, 0, sizeof(*stats));
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cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
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if (!cb2) {
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ehea_error("no mem for cb2");
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goto out;
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}
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hret = ehea_h_query_ehea_port(port->adapter->handle,
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port->logical_port_id,
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H_PORT_CB2, H_PORT_CB2_ALL, cb2);
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if (hret != H_SUCCESS) {
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ehea_error("query_ehea_port failed");
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goto out_herr;
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}
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if (netif_msg_hw(port))
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ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
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rx_packets = 0;
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for (i = 0; i < port->num_def_qps; i++)
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rx_packets += port->port_res[i].rx_packets;
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stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
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stats->multicast = cb2->rxmcp;
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stats->rx_errors = cb2->rxuerr;
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stats->rx_bytes = cb2->rxo;
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stats->tx_bytes = cb2->txo;
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stats->rx_packets = rx_packets;
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out_herr:
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kfree(cb2);
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out:
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return stats;
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}
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static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
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{
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struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
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struct net_device *dev = pr->port->netdev;
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int max_index_mask = pr->rq1_skba.len - 1;
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int i;
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if (!nr_of_wqes)
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return;
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for (i = 0; i < nr_of_wqes; i++) {
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if (!skb_arr_rq1[index]) {
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skb_arr_rq1[index] = netdev_alloc_skb(dev,
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EHEA_L_PKT_SIZE);
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if (!skb_arr_rq1[index]) {
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ehea_error("%s: no mem for skb/%d wqes filled",
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dev->name, i);
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break;
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}
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}
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index--;
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index &= max_index_mask;
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}
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/* Ring doorbell */
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ehea_update_rq1a(pr->qp, i);
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}
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static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
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{
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int ret = 0;
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struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
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struct net_device *dev = pr->port->netdev;
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int i;
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for (i = 0; i < pr->rq1_skba.len; i++) {
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skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
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if (!skb_arr_rq1[i]) {
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ehea_error("%s: no mem for skb/%d wqes filled",
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dev->name, i);
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ret = -ENOMEM;
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goto out;
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}
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}
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/* Ring doorbell */
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ehea_update_rq1a(pr->qp, nr_rq1a);
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out:
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return ret;
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}
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static int ehea_refill_rq_def(struct ehea_port_res *pr,
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struct ehea_q_skb_arr *q_skba, int rq_nr,
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int num_wqes, int wqe_type, int packet_size)
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{
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struct net_device *dev = pr->port->netdev;
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struct ehea_qp *qp = pr->qp;
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struct sk_buff **skb_arr = q_skba->arr;
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struct ehea_rwqe *rwqe;
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int i, index, max_index_mask, fill_wqes;
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int ret = 0;
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fill_wqes = q_skba->os_skbs + num_wqes;
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if (!fill_wqes)
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return ret;
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index = q_skba->index;
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max_index_mask = q_skba->len - 1;
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for (i = 0; i < fill_wqes; i++) {
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struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
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if (!skb) {
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ehea_error("%s: no mem for skb/%d wqes filled",
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dev->name, i);
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q_skba->os_skbs = fill_wqes - i;
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ret = -ENOMEM;
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break;
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}
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skb_reserve(skb, NET_IP_ALIGN);
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skb_arr[index] = skb;
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rwqe = ehea_get_next_rwqe(qp, rq_nr);
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rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
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| EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
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rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
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rwqe->sg_list[0].vaddr = (u64)skb->data;
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rwqe->sg_list[0].len = packet_size;
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rwqe->data_segments = 1;
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index++;
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index &= max_index_mask;
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}
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q_skba->index = index;
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/* Ring doorbell */
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iosync();
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if (rq_nr == 2)
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ehea_update_rq2a(pr->qp, i);
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else
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ehea_update_rq3a(pr->qp, i);
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return ret;
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}
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static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
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{
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return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
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nr_of_wqes, EHEA_RWQE2_TYPE,
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EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
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}
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static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
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{
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return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
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nr_of_wqes, EHEA_RWQE3_TYPE,
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EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
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}
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static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
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{
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*rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
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if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
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return 0;
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if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
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(cqe->header_length == 0))
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return 0;
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return -EINVAL;
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}
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static inline void ehea_fill_skb(struct net_device *dev,
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struct sk_buff *skb, struct ehea_cqe *cqe)
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{
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int length = cqe->num_bytes_transfered - 4; /*remove CRC */
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skb_put(skb, length);
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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skb->protocol = eth_type_trans(skb, dev);
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}
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static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
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int arr_len,
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struct ehea_cqe *cqe)
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{
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int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
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struct sk_buff *skb;
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void *pref;
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int x;
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x = skb_index + 1;
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x &= (arr_len - 1);
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pref = skb_array[x];
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prefetchw(pref);
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prefetchw(pref + EHEA_CACHE_LINE);
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pref = (skb_array[x]->data);
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prefetch(pref);
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prefetch(pref + EHEA_CACHE_LINE);
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prefetch(pref + EHEA_CACHE_LINE * 2);
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prefetch(pref + EHEA_CACHE_LINE * 3);
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skb = skb_array[skb_index];
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skb_array[skb_index] = NULL;
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return skb;
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}
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static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
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int arr_len, int wqe_index)
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{
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struct sk_buff *skb;
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void *pref;
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int x;
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x = wqe_index + 1;
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x &= (arr_len - 1);
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pref = skb_array[x];
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prefetchw(pref);
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prefetchw(pref + EHEA_CACHE_LINE);
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pref = (skb_array[x]->data);
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prefetchw(pref);
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prefetchw(pref + EHEA_CACHE_LINE);
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skb = skb_array[wqe_index];
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skb_array[wqe_index] = NULL;
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return skb;
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}
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static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
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struct ehea_cqe *cqe, int *processed_rq2,
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int *processed_rq3)
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{
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struct sk_buff *skb;
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if (netif_msg_rx_err(pr->port)) {
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ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
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ehea_dump(cqe, sizeof(*cqe), "CQE");
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}
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if (rq == 2) {
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*processed_rq2 += 1;
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skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
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dev_kfree_skb(skb);
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} else if (rq == 3) {
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*processed_rq3 += 1;
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skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
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dev_kfree_skb(skb);
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}
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if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
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ehea_error("Critical receive error. Resetting port.");
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queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
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return 1;
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}
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return 0;
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}
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static int ehea_poll(struct net_device *dev, int *budget)
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{
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struct ehea_port *port = netdev_priv(dev);
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struct ehea_port_res *pr = &port->port_res[0];
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struct ehea_qp *qp = pr->qp;
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struct ehea_cqe *cqe;
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struct sk_buff *skb;
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struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
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struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
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struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
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int skb_arr_rq1_len = pr->rq1_skba.len;
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int skb_arr_rq2_len = pr->rq2_skba.len;
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int skb_arr_rq3_len = pr->rq3_skba.len;
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int processed, processed_rq1, processed_rq2, processed_rq3;
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int wqe_index, last_wqe_index, rq, intreq, my_quota, port_reset;
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processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
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last_wqe_index = 0;
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my_quota = min(*budget, dev->quota);
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my_quota = min(my_quota, EHEA_POLL_MAX_RWQE);
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/* rq0 is low latency RQ */
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cqe = ehea_poll_rq1(qp, &wqe_index);
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while ((my_quota > 0) && cqe) {
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ehea_inc_rq1(qp);
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processed_rq1++;
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processed++;
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my_quota--;
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if (netif_msg_rx_status(port))
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ehea_dump(cqe, sizeof(*cqe), "CQE");
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last_wqe_index = wqe_index;
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rmb();
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if (!ehea_check_cqe(cqe, &rq)) {
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if (rq == 1) { /* LL RQ1 */
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skb = get_skb_by_index_ll(skb_arr_rq1,
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skb_arr_rq1_len,
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wqe_index);
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if (unlikely(!skb)) {
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if (netif_msg_rx_err(port))
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ehea_error("LL rq1: skb=NULL");
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skb = netdev_alloc_skb(dev,
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EHEA_L_PKT_SIZE);
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if (!skb)
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break;
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}
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memcpy(skb->data, ((char*)cqe) + 64,
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cqe->num_bytes_transfered - 4);
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ehea_fill_skb(dev, skb, cqe);
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} else if (rq == 2) { /* RQ2 */
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skb = get_skb_by_index(skb_arr_rq2,
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skb_arr_rq2_len, cqe);
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if (unlikely(!skb)) {
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if (netif_msg_rx_err(port))
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ehea_error("rq2: skb=NULL");
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break;
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}
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ehea_fill_skb(dev, skb, cqe);
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processed_rq2++;
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} else { /* RQ3 */
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skb = get_skb_by_index(skb_arr_rq3,
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skb_arr_rq3_len, cqe);
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if (unlikely(!skb)) {
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if (netif_msg_rx_err(port))
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ehea_error("rq3: skb=NULL");
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break;
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}
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ehea_fill_skb(dev, skb, cqe);
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processed_rq3++;
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}
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|
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if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
|
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vlan_hwaccel_receive_skb(skb, port->vgrp,
|
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cqe->vlan_tag);
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else
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netif_receive_skb(skb);
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|
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} else { /* Error occured */
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pr->p_state.poll_receive_errors++;
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port_reset = ehea_treat_poll_error(pr, rq, cqe,
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&processed_rq2,
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&processed_rq3);
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if (port_reset)
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break;
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}
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cqe = ehea_poll_rq1(qp, &wqe_index);
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}
|
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|
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dev->quota -= processed;
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*budget -= processed;
|
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|
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pr->p_state.ehea_poll += 1;
|
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pr->rx_packets += processed;
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|
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ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
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ehea_refill_rq2(pr, processed_rq2);
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ehea_refill_rq3(pr, processed_rq3);
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|
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intreq = ((pr->p_state.ehea_poll & 0xF) == 0xF);
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|
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if (!cqe || intreq) {
|
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netif_rx_complete(dev);
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ehea_reset_cq_ep(pr->recv_cq);
|
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ehea_reset_cq_n1(pr->recv_cq);
|
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cqe = hw_qeit_get_valid(&qp->hw_rqueue1);
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if (!cqe || intreq)
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return 0;
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if (!netif_rx_reschedule(dev, my_quota))
|
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return 0;
|
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}
|
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return 1;
|
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}
|
|
|
|
void free_sent_skbs(struct ehea_cqe *cqe, struct ehea_port_res *pr)
|
|
{
|
|
struct sk_buff *skb;
|
|
int index, max_index_mask, i;
|
|
|
|
index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
|
|
max_index_mask = pr->sq_skba.len - 1;
|
|
for (i = 0; i < EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); i++) {
|
|
skb = pr->sq_skba.arr[index];
|
|
if (likely(skb)) {
|
|
dev_kfree_skb(skb);
|
|
pr->sq_skba.arr[index] = NULL;
|
|
} else {
|
|
ehea_error("skb=NULL, wr_id=%lX, loop=%d, index=%d",
|
|
cqe->wr_id, i, index);
|
|
}
|
|
index--;
|
|
index &= max_index_mask;
|
|
}
|
|
}
|
|
|
|
#define MAX_SENDCOMP_QUOTA 400
|
|
void ehea_send_irq_tasklet(unsigned long data)
|
|
{
|
|
struct ehea_port_res *pr = (struct ehea_port_res*)data;
|
|
struct ehea_cq *send_cq = pr->send_cq;
|
|
struct ehea_cqe *cqe;
|
|
int quota = MAX_SENDCOMP_QUOTA;
|
|
int cqe_counter = 0;
|
|
int swqe_av = 0;
|
|
unsigned long flags;
|
|
|
|
do {
|
|
cqe = ehea_poll_cq(send_cq);
|
|
if (!cqe) {
|
|
ehea_reset_cq_ep(send_cq);
|
|
ehea_reset_cq_n1(send_cq);
|
|
cqe = ehea_poll_cq(send_cq);
|
|
if (!cqe)
|
|
break;
|
|
}
|
|
cqe_counter++;
|
|
rmb();
|
|
if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
|
|
ehea_error("Send Completion Error: Resetting port");
|
|
if (netif_msg_tx_err(pr->port))
|
|
ehea_dump(cqe, sizeof(*cqe), "Send CQE");
|
|
queue_work(pr->port->adapter->ehea_wq,
|
|
&pr->port->reset_task);
|
|
break;
|
|
}
|
|
|
|
if (netif_msg_tx_done(pr->port))
|
|
ehea_dump(cqe, sizeof(*cqe), "CQE");
|
|
|
|
if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
|
|
== EHEA_SWQE2_TYPE))
|
|
free_sent_skbs(cqe, pr);
|
|
|
|
swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
|
|
quota--;
|
|
} while (quota > 0);
|
|
|
|
ehea_update_feca(send_cq, cqe_counter);
|
|
atomic_add(swqe_av, &pr->swqe_avail);
|
|
|
|
spin_lock_irqsave(&pr->netif_queue, flags);
|
|
if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
|
|
>= pr->swqe_refill_th)) {
|
|
netif_wake_queue(pr->port->netdev);
|
|
pr->queue_stopped = 0;
|
|
}
|
|
spin_unlock_irqrestore(&pr->netif_queue, flags);
|
|
|
|
if (unlikely(cqe))
|
|
tasklet_hi_schedule(&pr->send_comp_task);
|
|
}
|
|
|
|
static irqreturn_t ehea_send_irq_handler(int irq, void *param)
|
|
{
|
|
struct ehea_port_res *pr = param;
|
|
tasklet_hi_schedule(&pr->send_comp_task);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
|
|
{
|
|
struct ehea_port_res *pr = param;
|
|
struct ehea_port *port = pr->port;
|
|
netif_rx_schedule(port->netdev);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
|
|
{
|
|
struct ehea_port *port = param;
|
|
struct ehea_eqe *eqe;
|
|
struct ehea_qp *qp;
|
|
u32 qp_token;
|
|
|
|
eqe = ehea_poll_eq(port->qp_eq);
|
|
|
|
while (eqe) {
|
|
qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
|
|
ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
|
|
eqe->entry, qp_token);
|
|
|
|
qp = port->port_res[qp_token].qp;
|
|
ehea_error_data(port->adapter, qp->fw_handle);
|
|
eqe = ehea_poll_eq(port->qp_eq);
|
|
}
|
|
|
|
queue_work(port->adapter->ehea_wq, &port->reset_task);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
|
|
int logical_port)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_ports; i++)
|
|
if (adapter->port[i])
|
|
if (adapter->port[i]->logical_port_id == logical_port)
|
|
return adapter->port[i];
|
|
return NULL;
|
|
}
|
|
|
|
int ehea_sense_port_attr(struct ehea_port *port)
|
|
{
|
|
int ret;
|
|
u64 hret;
|
|
struct hcp_ehea_port_cb0 *cb0;
|
|
|
|
cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
|
|
if (!cb0) { /* ehea_neq_tasklet() */
|
|
ehea_error("no mem for cb0");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea_port(port->adapter->handle,
|
|
port->logical_port_id, H_PORT_CB0,
|
|
EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
|
|
cb0);
|
|
if (hret != H_SUCCESS) {
|
|
ret = -EIO;
|
|
goto out_free;
|
|
}
|
|
|
|
/* MAC address */
|
|
port->mac_addr = cb0->port_mac_addr << 16;
|
|
|
|
if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
|
|
ret = -EADDRNOTAVAIL;
|
|
goto out_free;
|
|
}
|
|
|
|
/* Port speed */
|
|
switch (cb0->port_speed) {
|
|
case H_SPEED_10M_H:
|
|
port->port_speed = EHEA_SPEED_10M;
|
|
port->full_duplex = 0;
|
|
break;
|
|
case H_SPEED_10M_F:
|
|
port->port_speed = EHEA_SPEED_10M;
|
|
port->full_duplex = 1;
|
|
break;
|
|
case H_SPEED_100M_H:
|
|
port->port_speed = EHEA_SPEED_100M;
|
|
port->full_duplex = 0;
|
|
break;
|
|
case H_SPEED_100M_F:
|
|
port->port_speed = EHEA_SPEED_100M;
|
|
port->full_duplex = 1;
|
|
break;
|
|
case H_SPEED_1G_F:
|
|
port->port_speed = EHEA_SPEED_1G;
|
|
port->full_duplex = 1;
|
|
break;
|
|
case H_SPEED_10G_F:
|
|
port->port_speed = EHEA_SPEED_10G;
|
|
port->full_duplex = 1;
|
|
break;
|
|
default:
|
|
port->port_speed = 0;
|
|
port->full_duplex = 0;
|
|
break;
|
|
}
|
|
|
|
port->autoneg = 1;
|
|
|
|
/* Number of default QPs */
|
|
port->num_def_qps = cb0->num_default_qps;
|
|
|
|
if (!port->num_def_qps) {
|
|
ret = -EINVAL;
|
|
goto out_free;
|
|
}
|
|
|
|
if (port->num_def_qps >= EHEA_NUM_TX_QP)
|
|
port->num_add_tx_qps = 0;
|
|
else
|
|
port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
|
|
|
|
ret = 0;
|
|
out_free:
|
|
if (ret || netif_msg_probe(port))
|
|
ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
|
|
kfree(cb0);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
|
|
{
|
|
struct hcp_ehea_port_cb4 *cb4;
|
|
u64 hret;
|
|
int ret = 0;
|
|
|
|
cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb4) {
|
|
ehea_error("no mem for cb4");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
cb4->port_speed = port_speed;
|
|
|
|
netif_carrier_off(port->netdev);
|
|
|
|
hret = ehea_h_modify_ehea_port(port->adapter->handle,
|
|
port->logical_port_id,
|
|
H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
|
|
if (hret == H_SUCCESS) {
|
|
port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
|
|
|
|
hret = ehea_h_query_ehea_port(port->adapter->handle,
|
|
port->logical_port_id,
|
|
H_PORT_CB4, H_PORT_CB4_SPEED,
|
|
cb4);
|
|
if (hret == H_SUCCESS) {
|
|
switch (cb4->port_speed) {
|
|
case H_SPEED_10M_H:
|
|
port->port_speed = EHEA_SPEED_10M;
|
|
port->full_duplex = 0;
|
|
break;
|
|
case H_SPEED_10M_F:
|
|
port->port_speed = EHEA_SPEED_10M;
|
|
port->full_duplex = 1;
|
|
break;
|
|
case H_SPEED_100M_H:
|
|
port->port_speed = EHEA_SPEED_100M;
|
|
port->full_duplex = 0;
|
|
break;
|
|
case H_SPEED_100M_F:
|
|
port->port_speed = EHEA_SPEED_100M;
|
|
port->full_duplex = 1;
|
|
break;
|
|
case H_SPEED_1G_F:
|
|
port->port_speed = EHEA_SPEED_1G;
|
|
port->full_duplex = 1;
|
|
break;
|
|
case H_SPEED_10G_F:
|
|
port->port_speed = EHEA_SPEED_10G;
|
|
port->full_duplex = 1;
|
|
break;
|
|
default:
|
|
port->port_speed = 0;
|
|
port->full_duplex = 0;
|
|
break;
|
|
}
|
|
} else {
|
|
ehea_error("Failed sensing port speed");
|
|
ret = -EIO;
|
|
}
|
|
} else {
|
|
if (hret == H_AUTHORITY) {
|
|
ehea_info("Hypervisor denied setting port speed");
|
|
ret = -EPERM;
|
|
} else {
|
|
ret = -EIO;
|
|
ehea_error("Failed setting port speed");
|
|
}
|
|
}
|
|
netif_carrier_on(port->netdev);
|
|
kfree(cb4);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
|
|
{
|
|
int ret;
|
|
u8 ec;
|
|
u8 portnum;
|
|
struct ehea_port *port;
|
|
|
|
ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
|
|
portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
|
|
port = ehea_get_port(adapter, portnum);
|
|
|
|
switch (ec) {
|
|
case EHEA_EC_PORTSTATE_CHG: /* port state change */
|
|
|
|
if (!port) {
|
|
ehea_error("unknown portnum %x", portnum);
|
|
break;
|
|
}
|
|
|
|
if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
|
|
if (!netif_carrier_ok(port->netdev)) {
|
|
ret = ehea_sense_port_attr(port);
|
|
if (ret) {
|
|
ehea_error("failed resensing port "
|
|
"attributes");
|
|
break;
|
|
}
|
|
|
|
if (netif_msg_link(port))
|
|
ehea_info("%s: Logical port up: %dMbps "
|
|
"%s Duplex",
|
|
port->netdev->name,
|
|
port->port_speed,
|
|
port->full_duplex ==
|
|
1 ? "Full" : "Half");
|
|
|
|
netif_carrier_on(port->netdev);
|
|
netif_wake_queue(port->netdev);
|
|
}
|
|
} else
|
|
if (netif_carrier_ok(port->netdev)) {
|
|
if (netif_msg_link(port))
|
|
ehea_info("%s: Logical port down",
|
|
port->netdev->name);
|
|
netif_carrier_off(port->netdev);
|
|
netif_stop_queue(port->netdev);
|
|
}
|
|
|
|
if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
|
|
if (netif_msg_link(port))
|
|
ehea_info("%s: Physical port up",
|
|
port->netdev->name);
|
|
} else {
|
|
if (netif_msg_link(port))
|
|
ehea_info("%s: Physical port down",
|
|
port->netdev->name);
|
|
}
|
|
|
|
if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
|
|
ehea_info("External switch port is primary port");
|
|
else
|
|
ehea_info("External switch port is backup port");
|
|
|
|
break;
|
|
case EHEA_EC_ADAPTER_MALFUNC:
|
|
ehea_error("Adapter malfunction");
|
|
break;
|
|
case EHEA_EC_PORT_MALFUNC:
|
|
ehea_info("Port malfunction: Device: %s", port->netdev->name);
|
|
netif_carrier_off(port->netdev);
|
|
netif_stop_queue(port->netdev);
|
|
break;
|
|
default:
|
|
ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ehea_neq_tasklet(unsigned long data)
|
|
{
|
|
struct ehea_adapter *adapter = (struct ehea_adapter*)data;
|
|
struct ehea_eqe *eqe;
|
|
u64 event_mask;
|
|
|
|
eqe = ehea_poll_eq(adapter->neq);
|
|
ehea_debug("eqe=%p", eqe);
|
|
|
|
while (eqe) {
|
|
ehea_debug("*eqe=%lx", eqe->entry);
|
|
ehea_parse_eqe(adapter, eqe->entry);
|
|
eqe = ehea_poll_eq(adapter->neq);
|
|
ehea_debug("next eqe=%p", eqe);
|
|
}
|
|
|
|
event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
|
|
| EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
|
|
| EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
|
|
|
|
ehea_h_reset_events(adapter->handle,
|
|
adapter->neq->fw_handle, event_mask);
|
|
}
|
|
|
|
static irqreturn_t ehea_interrupt_neq(int irq, void *param)
|
|
{
|
|
struct ehea_adapter *adapter = param;
|
|
tasklet_hi_schedule(&adapter->neq_tasklet);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
|
|
static int ehea_fill_port_res(struct ehea_port_res *pr)
|
|
{
|
|
int ret;
|
|
struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
|
|
|
|
ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
|
|
- init_attr->act_nr_rwqes_rq2
|
|
- init_attr->act_nr_rwqes_rq3 - 1);
|
|
|
|
ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
|
|
|
|
ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_reg_interrupts(struct net_device *dev)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct ehea_port_res *pr;
|
|
int i, ret;
|
|
|
|
for (i = 0; i < port->num_def_qps; i++) {
|
|
pr = &port->port_res[i];
|
|
snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
|
|
, "%s-recv%d", dev->name, i);
|
|
ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
|
|
ehea_recv_irq_handler,
|
|
IRQF_DISABLED, pr->int_recv_name, pr);
|
|
if (ret) {
|
|
ehea_error("failed registering irq for ehea_recv_int:"
|
|
"port_res_nr:%d, ist=%X", i,
|
|
pr->recv_eq->attr.ist1);
|
|
goto out_free_seq;
|
|
}
|
|
if (netif_msg_ifup(port))
|
|
ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
|
|
"registered", pr->recv_eq->attr.ist1, i);
|
|
}
|
|
|
|
snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
|
|
dev->name);
|
|
|
|
ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
|
|
ehea_qp_aff_irq_handler,
|
|
IRQF_DISABLED, port->int_aff_name, port);
|
|
if (ret) {
|
|
ehea_error("failed registering irq for qp_aff_irq_handler:"
|
|
"ist=%X", port->qp_eq->attr.ist1);
|
|
goto out_free_qpeq;
|
|
}
|
|
|
|
if (netif_msg_ifup(port))
|
|
ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
|
|
"registered", port->qp_eq->attr.ist1);
|
|
|
|
for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
|
|
pr = &port->port_res[i];
|
|
snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
|
|
"%s-send%d", dev->name, i);
|
|
ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
|
|
ehea_send_irq_handler,
|
|
IRQF_DISABLED, pr->int_send_name,
|
|
pr);
|
|
if (ret) {
|
|
ehea_error("failed registering irq for ehea_send "
|
|
"port_res_nr:%d, ist=%X", i,
|
|
pr->send_eq->attr.ist1);
|
|
goto out_free_req;
|
|
}
|
|
if (netif_msg_ifup(port))
|
|
ehea_info("irq_handle 0x%X for function ehea_send_int "
|
|
"%d registered", pr->send_eq->attr.ist1, i);
|
|
}
|
|
out:
|
|
return ret;
|
|
|
|
out_free_req:
|
|
while (--i >= 0) {
|
|
u32 ist = port->port_res[i].send_eq->attr.ist1;
|
|
ibmebus_free_irq(NULL, ist, &port->port_res[i]);
|
|
}
|
|
out_free_qpeq:
|
|
ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
|
|
i = port->num_def_qps;
|
|
out_free_seq:
|
|
while (--i >= 0) {
|
|
u32 ist = port->port_res[i].recv_eq->attr.ist1;
|
|
ibmebus_free_irq(NULL, ist, &port->port_res[i]);
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
static void ehea_free_interrupts(struct net_device *dev)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct ehea_port_res *pr;
|
|
int i;
|
|
|
|
/* send */
|
|
for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
|
|
pr = &port->port_res[i];
|
|
ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
|
|
if (netif_msg_intr(port))
|
|
ehea_info("free send irq for res %d with handle 0x%X",
|
|
i, pr->send_eq->attr.ist1);
|
|
}
|
|
|
|
/* receive */
|
|
for (i = 0; i < port->num_def_qps; i++) {
|
|
pr = &port->port_res[i];
|
|
ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
|
|
if (netif_msg_intr(port))
|
|
ehea_info("free recv irq for res %d with handle 0x%X",
|
|
i, pr->recv_eq->attr.ist1);
|
|
}
|
|
|
|
/* associated events */
|
|
ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
|
|
if (netif_msg_intr(port))
|
|
ehea_info("associated event interrupt for handle 0x%X freed",
|
|
port->qp_eq->attr.ist1);
|
|
}
|
|
|
|
static int ehea_configure_port(struct ehea_port *port)
|
|
{
|
|
int ret, i;
|
|
u64 hret, mask;
|
|
struct hcp_ehea_port_cb0 *cb0;
|
|
|
|
ret = -ENOMEM;
|
|
cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb0)
|
|
goto out;
|
|
|
|
cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
|
|
| EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
|
|
| EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
|
|
| EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
|
|
| EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
|
|
PXLY_RC_VLAN_FILTER)
|
|
| EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
|
|
|
|
for (i = 0; i < port->num_def_qps; i++)
|
|
cb0->default_qpn_arr[i] = port->port_res[0].qp->init_attr.qp_nr;
|
|
|
|
if (netif_msg_ifup(port))
|
|
ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
|
|
|
|
mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
|
|
| EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
|
|
|
|
hret = ehea_h_modify_ehea_port(port->adapter->handle,
|
|
port->logical_port_id,
|
|
H_PORT_CB0, mask, cb0);
|
|
ret = -EIO;
|
|
if (hret != H_SUCCESS)
|
|
goto out_free;
|
|
|
|
ret = 0;
|
|
|
|
out_free:
|
|
kfree(cb0);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_gen_smrs(struct ehea_port_res *pr)
|
|
{
|
|
u64 hret;
|
|
struct ehea_adapter *adapter = pr->port->adapter;
|
|
|
|
hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
|
|
adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
|
|
adapter->pd, &pr->send_mr);
|
|
if (hret != H_SUCCESS)
|
|
goto out;
|
|
|
|
hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
|
|
adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
|
|
adapter->pd, &pr->recv_mr);
|
|
if (hret != H_SUCCESS)
|
|
goto out_freeres;
|
|
|
|
return 0;
|
|
|
|
out_freeres:
|
|
hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
|
|
if (hret != H_SUCCESS)
|
|
ehea_error("failed freeing SMR");
|
|
out:
|
|
return -EIO;
|
|
}
|
|
|
|
static int ehea_rem_smrs(struct ehea_port_res *pr)
|
|
{
|
|
struct ehea_adapter *adapter = pr->port->adapter;
|
|
int ret = 0;
|
|
u64 hret;
|
|
|
|
hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
|
|
if (hret != H_SUCCESS) {
|
|
ret = -EIO;
|
|
ehea_error("failed freeing send SMR for pr=%p", pr);
|
|
}
|
|
|
|
hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
|
|
if (hret != H_SUCCESS) {
|
|
ret = -EIO;
|
|
ehea_error("failed freeing recv SMR for pr=%p", pr);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
|
|
{
|
|
int arr_size = sizeof(void*) * max_q_entries;
|
|
|
|
q_skba->arr = vmalloc(arr_size);
|
|
if (!q_skba->arr)
|
|
return -ENOMEM;
|
|
|
|
memset(q_skba->arr, 0, arr_size);
|
|
|
|
q_skba->len = max_q_entries;
|
|
q_skba->index = 0;
|
|
q_skba->os_skbs = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
|
|
struct port_res_cfg *pr_cfg, int queue_token)
|
|
{
|
|
struct ehea_adapter *adapter = port->adapter;
|
|
enum ehea_eq_type eq_type = EHEA_EQ;
|
|
struct ehea_qp_init_attr *init_attr = NULL;
|
|
int ret = -EIO;
|
|
|
|
memset(pr, 0, sizeof(struct ehea_port_res));
|
|
|
|
pr->port = port;
|
|
spin_lock_init(&pr->send_lock);
|
|
spin_lock_init(&pr->recv_lock);
|
|
spin_lock_init(&pr->xmit_lock);
|
|
spin_lock_init(&pr->netif_queue);
|
|
|
|
pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
|
|
if (!pr->recv_eq) {
|
|
ehea_error("create_eq failed (recv_eq)");
|
|
goto out_free;
|
|
}
|
|
|
|
pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
|
|
if (!pr->send_eq) {
|
|
ehea_error("create_eq failed (send_eq)");
|
|
goto out_free;
|
|
}
|
|
|
|
pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
|
|
pr->recv_eq->fw_handle,
|
|
port->logical_port_id);
|
|
if (!pr->recv_cq) {
|
|
ehea_error("create_cq failed (cq_recv)");
|
|
goto out_free;
|
|
}
|
|
|
|
pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
|
|
pr->send_eq->fw_handle,
|
|
port->logical_port_id);
|
|
if (!pr->send_cq) {
|
|
ehea_error("create_cq failed (cq_send)");
|
|
goto out_free;
|
|
}
|
|
|
|
if (netif_msg_ifup(port))
|
|
ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
|
|
pr->send_cq->attr.act_nr_of_cqes,
|
|
pr->recv_cq->attr.act_nr_of_cqes);
|
|
|
|
init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
|
|
if (!init_attr) {
|
|
ret = -ENOMEM;
|
|
ehea_error("no mem for ehea_qp_init_attr");
|
|
goto out_free;
|
|
}
|
|
|
|
init_attr->low_lat_rq1 = 1;
|
|
init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
|
|
init_attr->rq_count = 3;
|
|
init_attr->qp_token = queue_token;
|
|
init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
|
|
init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
|
|
init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
|
|
init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
|
|
init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
|
|
init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
|
|
init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
|
|
init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
|
|
init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
|
|
init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
|
|
init_attr->port_nr = port->logical_port_id;
|
|
init_attr->send_cq_handle = pr->send_cq->fw_handle;
|
|
init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
|
|
init_attr->aff_eq_handle = port->qp_eq->fw_handle;
|
|
|
|
pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
|
|
if (!pr->qp) {
|
|
ehea_error("create_qp failed");
|
|
ret = -EIO;
|
|
goto out_free;
|
|
}
|
|
|
|
if (netif_msg_ifup(port))
|
|
ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
|
|
"nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
|
|
init_attr->act_nr_send_wqes,
|
|
init_attr->act_nr_rwqes_rq1,
|
|
init_attr->act_nr_rwqes_rq2,
|
|
init_attr->act_nr_rwqes_rq3);
|
|
|
|
ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
|
|
ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
|
|
ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
|
|
ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
|
|
if (ret)
|
|
goto out_free;
|
|
|
|
pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
|
|
if (ehea_gen_smrs(pr) != 0) {
|
|
ret = -EIO;
|
|
goto out_free;
|
|
}
|
|
tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
|
|
(unsigned long)pr);
|
|
atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
|
|
|
|
kfree(init_attr);
|
|
ret = 0;
|
|
goto out;
|
|
|
|
out_free:
|
|
kfree(init_attr);
|
|
vfree(pr->sq_skba.arr);
|
|
vfree(pr->rq1_skba.arr);
|
|
vfree(pr->rq2_skba.arr);
|
|
vfree(pr->rq3_skba.arr);
|
|
ehea_destroy_qp(pr->qp);
|
|
ehea_destroy_cq(pr->send_cq);
|
|
ehea_destroy_cq(pr->recv_cq);
|
|
ehea_destroy_eq(pr->send_eq);
|
|
ehea_destroy_eq(pr->recv_eq);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
|
|
{
|
|
int ret, i;
|
|
|
|
ret = ehea_destroy_qp(pr->qp);
|
|
|
|
if (!ret) {
|
|
ehea_destroy_cq(pr->send_cq);
|
|
ehea_destroy_cq(pr->recv_cq);
|
|
ehea_destroy_eq(pr->send_eq);
|
|
ehea_destroy_eq(pr->recv_eq);
|
|
|
|
for (i = 0; i < pr->rq1_skba.len; i++)
|
|
if (pr->rq1_skba.arr[i])
|
|
dev_kfree_skb(pr->rq1_skba.arr[i]);
|
|
|
|
for (i = 0; i < pr->rq2_skba.len; i++)
|
|
if (pr->rq2_skba.arr[i])
|
|
dev_kfree_skb(pr->rq2_skba.arr[i]);
|
|
|
|
for (i = 0; i < pr->rq3_skba.len; i++)
|
|
if (pr->rq3_skba.arr[i])
|
|
dev_kfree_skb(pr->rq3_skba.arr[i]);
|
|
|
|
for (i = 0; i < pr->sq_skba.len; i++)
|
|
if (pr->sq_skba.arr[i])
|
|
dev_kfree_skb(pr->sq_skba.arr[i]);
|
|
|
|
vfree(pr->rq1_skba.arr);
|
|
vfree(pr->rq2_skba.arr);
|
|
vfree(pr->rq3_skba.arr);
|
|
vfree(pr->sq_skba.arr);
|
|
ret = ehea_rem_smrs(pr);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* The write_* functions store information in swqe which is used by
|
|
* the hardware to calculate the ip/tcp/udp checksum
|
|
*/
|
|
|
|
static inline void write_ip_start_end(struct ehea_swqe *swqe,
|
|
const struct sk_buff *skb)
|
|
{
|
|
swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
|
|
swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
|
|
}
|
|
|
|
static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
|
|
const struct sk_buff *skb)
|
|
{
|
|
swqe->tcp_offset =
|
|
(u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
|
|
|
|
swqe->tcp_end = (u16)skb->len - 1;
|
|
}
|
|
|
|
static inline void write_udp_offset_end(struct ehea_swqe *swqe,
|
|
const struct sk_buff *skb)
|
|
{
|
|
swqe->tcp_offset =
|
|
(u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
|
|
|
|
swqe->tcp_end = (u16)skb->len - 1;
|
|
}
|
|
|
|
|
|
static void write_swqe2_TSO(struct sk_buff *skb,
|
|
struct ehea_swqe *swqe, u32 lkey)
|
|
{
|
|
struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
|
|
u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
|
|
int skb_data_size = skb->len - skb->data_len;
|
|
int headersize;
|
|
u64 tmp_addr;
|
|
|
|
/* Packet is TCP with TSO enabled */
|
|
swqe->tx_control |= EHEA_SWQE_TSO;
|
|
swqe->mss = skb_shinfo(skb)->gso_size;
|
|
/* copy only eth/ip/tcp headers to immediate data and
|
|
* the rest of skb->data to sg1entry
|
|
*/
|
|
headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
|
|
|
|
skb_data_size = skb->len - skb->data_len;
|
|
|
|
if (skb_data_size >= headersize) {
|
|
/* copy immediate data */
|
|
memcpy(imm_data, skb->data, headersize);
|
|
swqe->immediate_data_length = headersize;
|
|
|
|
if (skb_data_size > headersize) {
|
|
/* set sg1entry data */
|
|
sg1entry->l_key = lkey;
|
|
sg1entry->len = skb_data_size - headersize;
|
|
|
|
tmp_addr = (u64)(skb->data + headersize);
|
|
sg1entry->vaddr = tmp_addr;
|
|
swqe->descriptors++;
|
|
}
|
|
} else
|
|
ehea_error("cannot handle fragmented headers");
|
|
}
|
|
|
|
static void write_swqe2_nonTSO(struct sk_buff *skb,
|
|
struct ehea_swqe *swqe, u32 lkey)
|
|
{
|
|
int skb_data_size = skb->len - skb->data_len;
|
|
u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
|
|
struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
|
|
u64 tmp_addr;
|
|
|
|
/* Packet is any nonTSO type
|
|
*
|
|
* Copy as much as possible skb->data to immediate data and
|
|
* the rest to sg1entry
|
|
*/
|
|
if (skb_data_size >= SWQE2_MAX_IMM) {
|
|
/* copy immediate data */
|
|
memcpy(imm_data, skb->data, SWQE2_MAX_IMM);
|
|
|
|
swqe->immediate_data_length = SWQE2_MAX_IMM;
|
|
|
|
if (skb_data_size > SWQE2_MAX_IMM) {
|
|
/* copy sg1entry data */
|
|
sg1entry->l_key = lkey;
|
|
sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
|
|
tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
|
|
sg1entry->vaddr = tmp_addr;
|
|
swqe->descriptors++;
|
|
}
|
|
} else {
|
|
memcpy(imm_data, skb->data, skb_data_size);
|
|
swqe->immediate_data_length = skb_data_size;
|
|
}
|
|
}
|
|
|
|
static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
|
|
struct ehea_swqe *swqe, u32 lkey)
|
|
{
|
|
struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
|
|
skb_frag_t *frag;
|
|
int nfrags, sg1entry_contains_frag_data, i;
|
|
u64 tmp_addr;
|
|
|
|
nfrags = skb_shinfo(skb)->nr_frags;
|
|
sg1entry = &swqe->u.immdata_desc.sg_entry;
|
|
sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
|
|
swqe->descriptors = 0;
|
|
sg1entry_contains_frag_data = 0;
|
|
|
|
if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
|
|
write_swqe2_TSO(skb, swqe, lkey);
|
|
else
|
|
write_swqe2_nonTSO(skb, swqe, lkey);
|
|
|
|
/* write descriptors */
|
|
if (nfrags > 0) {
|
|
if (swqe->descriptors == 0) {
|
|
/* sg1entry not yet used */
|
|
frag = &skb_shinfo(skb)->frags[0];
|
|
|
|
/* copy sg1entry data */
|
|
sg1entry->l_key = lkey;
|
|
sg1entry->len = frag->size;
|
|
tmp_addr = (u64)(page_address(frag->page)
|
|
+ frag->page_offset);
|
|
sg1entry->vaddr = tmp_addr;
|
|
swqe->descriptors++;
|
|
sg1entry_contains_frag_data = 1;
|
|
}
|
|
|
|
for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
|
|
|
|
frag = &skb_shinfo(skb)->frags[i];
|
|
sgentry = &sg_list[i - sg1entry_contains_frag_data];
|
|
|
|
sgentry->l_key = lkey;
|
|
sgentry->len = frag->size;
|
|
|
|
tmp_addr = (u64)(page_address(frag->page)
|
|
+ frag->page_offset);
|
|
sgentry->vaddr = tmp_addr;
|
|
swqe->descriptors++;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
|
|
{
|
|
int ret = 0;
|
|
u64 hret;
|
|
u8 reg_type;
|
|
|
|
/* De/Register untagged packets */
|
|
reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
|
|
hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
|
|
port->logical_port_id,
|
|
reg_type, port->mac_addr, 0, hcallid);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("reg_dereg_bcmc failed (tagged)");
|
|
ret = -EIO;
|
|
goto out_herr;
|
|
}
|
|
|
|
/* De/Register VLAN packets */
|
|
reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
|
|
hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
|
|
port->logical_port_id,
|
|
reg_type, port->mac_addr, 0, hcallid);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("reg_dereg_bcmc failed (vlan)");
|
|
ret = -EIO;
|
|
}
|
|
out_herr:
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_set_mac_addr(struct net_device *dev, void *sa)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct sockaddr *mac_addr = sa;
|
|
struct hcp_ehea_port_cb0 *cb0;
|
|
int ret;
|
|
u64 hret;
|
|
|
|
if (!is_valid_ether_addr(mac_addr->sa_data)) {
|
|
ret = -EADDRNOTAVAIL;
|
|
goto out;
|
|
}
|
|
|
|
cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb0) {
|
|
ehea_error("no mem for cb0");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
|
|
|
|
cb0->port_mac_addr = cb0->port_mac_addr >> 16;
|
|
|
|
hret = ehea_h_modify_ehea_port(port->adapter->handle,
|
|
port->logical_port_id, H_PORT_CB0,
|
|
EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
|
|
if (hret != H_SUCCESS) {
|
|
ret = -EIO;
|
|
goto out_free;
|
|
}
|
|
|
|
memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
|
|
|
|
/* Deregister old MAC in pHYP */
|
|
ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
|
|
if (ret)
|
|
goto out_free;
|
|
|
|
port->mac_addr = cb0->port_mac_addr << 16;
|
|
|
|
/* Register new MAC in pHYP */
|
|
ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
|
|
if (ret)
|
|
goto out_free;
|
|
|
|
ret = 0;
|
|
out_free:
|
|
kfree(cb0);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void ehea_promiscuous_error(u64 hret, int enable)
|
|
{
|
|
if (hret == H_AUTHORITY)
|
|
ehea_info("Hypervisor denied %sabling promiscuous mode",
|
|
enable == 1 ? "en" : "dis");
|
|
else
|
|
ehea_error("failed %sabling promiscuous mode",
|
|
enable == 1 ? "en" : "dis");
|
|
}
|
|
|
|
static void ehea_promiscuous(struct net_device *dev, int enable)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct hcp_ehea_port_cb7 *cb7;
|
|
u64 hret;
|
|
|
|
if ((enable && port->promisc) || (!enable && !port->promisc))
|
|
return;
|
|
|
|
cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
|
|
if (!cb7) {
|
|
ehea_error("no mem for cb7");
|
|
goto out;
|
|
}
|
|
|
|
/* Modify Pxs_DUCQPN in CB7 */
|
|
cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
|
|
|
|
hret = ehea_h_modify_ehea_port(port->adapter->handle,
|
|
port->logical_port_id,
|
|
H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
|
|
if (hret) {
|
|
ehea_promiscuous_error(hret, enable);
|
|
goto out;
|
|
}
|
|
|
|
port->promisc = enable;
|
|
out:
|
|
kfree(cb7);
|
|
return;
|
|
}
|
|
|
|
static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
|
|
u32 hcallid)
|
|
{
|
|
u64 hret;
|
|
u8 reg_type;
|
|
|
|
reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
|
|
| EHEA_BCMC_UNTAGGED;
|
|
|
|
hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
|
|
port->logical_port_id,
|
|
reg_type, mc_mac_addr, 0, hcallid);
|
|
if (hret)
|
|
goto out;
|
|
|
|
reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
|
|
| EHEA_BCMC_VLANID_ALL;
|
|
|
|
hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
|
|
port->logical_port_id,
|
|
reg_type, mc_mac_addr, 0, hcallid);
|
|
out:
|
|
return hret;
|
|
}
|
|
|
|
static int ehea_drop_multicast_list(struct net_device *dev)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct ehea_mc_list *mc_entry = port->mc_list;
|
|
struct list_head *pos;
|
|
struct list_head *temp;
|
|
int ret = 0;
|
|
u64 hret;
|
|
|
|
list_for_each_safe(pos, temp, &(port->mc_list->list)) {
|
|
mc_entry = list_entry(pos, struct ehea_mc_list, list);
|
|
|
|
hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
|
|
H_DEREG_BCMC);
|
|
if (hret) {
|
|
ehea_error("failed deregistering mcast MAC");
|
|
ret = -EIO;
|
|
}
|
|
|
|
list_del(pos);
|
|
kfree(mc_entry);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void ehea_allmulti(struct net_device *dev, int enable)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
u64 hret;
|
|
|
|
if (!port->allmulti) {
|
|
if (enable) {
|
|
/* Enable ALLMULTI */
|
|
ehea_drop_multicast_list(dev);
|
|
hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
|
|
if (!hret)
|
|
port->allmulti = 1;
|
|
else
|
|
ehea_error("failed enabling IFF_ALLMULTI");
|
|
}
|
|
} else
|
|
if (!enable) {
|
|
/* Disable ALLMULTI */
|
|
hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
|
|
if (!hret)
|
|
port->allmulti = 0;
|
|
else
|
|
ehea_error("failed disabling IFF_ALLMULTI");
|
|
}
|
|
}
|
|
|
|
static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
|
|
{
|
|
struct ehea_mc_list *ehea_mcl_entry;
|
|
u64 hret;
|
|
|
|
ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
|
|
if (!ehea_mcl_entry) {
|
|
ehea_error("no mem for mcl_entry");
|
|
return;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&ehea_mcl_entry->list);
|
|
|
|
memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
|
|
|
|
hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
|
|
H_REG_BCMC);
|
|
if (!hret)
|
|
list_add(&ehea_mcl_entry->list, &port->mc_list->list);
|
|
else {
|
|
ehea_error("failed registering mcast MAC");
|
|
kfree(ehea_mcl_entry);
|
|
}
|
|
}
|
|
|
|
static void ehea_set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct dev_mc_list *k_mcl_entry;
|
|
int ret, i;
|
|
|
|
if (dev->flags & IFF_PROMISC) {
|
|
ehea_promiscuous(dev, 1);
|
|
return;
|
|
}
|
|
ehea_promiscuous(dev, 0);
|
|
|
|
if (dev->flags & IFF_ALLMULTI) {
|
|
ehea_allmulti(dev, 1);
|
|
return;
|
|
}
|
|
ehea_allmulti(dev, 0);
|
|
|
|
if (dev->mc_count) {
|
|
ret = ehea_drop_multicast_list(dev);
|
|
if (ret) {
|
|
/* Dropping the current multicast list failed.
|
|
* Enabling ALL_MULTI is the best we can do.
|
|
*/
|
|
ehea_allmulti(dev, 1);
|
|
}
|
|
|
|
if (dev->mc_count > port->adapter->max_mc_mac) {
|
|
ehea_info("Mcast registration limit reached (0x%lx). "
|
|
"Use ALLMULTI!",
|
|
port->adapter->max_mc_mac);
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0, k_mcl_entry = dev->mc_list;
|
|
i < dev->mc_count;
|
|
i++, k_mcl_entry = k_mcl_entry->next) {
|
|
ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
|
|
}
|
|
}
|
|
out:
|
|
return;
|
|
}
|
|
|
|
static int ehea_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
|
|
return -EINVAL;
|
|
dev->mtu = new_mtu;
|
|
return 0;
|
|
}
|
|
|
|
static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
|
|
struct ehea_swqe *swqe, u32 lkey)
|
|
{
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
/* IPv4 */
|
|
swqe->tx_control |= EHEA_SWQE_CRC
|
|
| EHEA_SWQE_IP_CHECKSUM
|
|
| EHEA_SWQE_TCP_CHECKSUM
|
|
| EHEA_SWQE_IMM_DATA_PRESENT
|
|
| EHEA_SWQE_DESCRIPTORS_PRESENT;
|
|
|
|
write_ip_start_end(swqe, skb);
|
|
|
|
if (skb->nh.iph->protocol == IPPROTO_UDP) {
|
|
if ((skb->nh.iph->frag_off & IP_MF) ||
|
|
(skb->nh.iph->frag_off & IP_OFFSET))
|
|
/* IP fragment, so don't change cs */
|
|
swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
|
|
else
|
|
write_udp_offset_end(swqe, skb);
|
|
|
|
} else if (skb->nh.iph->protocol == IPPROTO_TCP) {
|
|
write_tcp_offset_end(swqe, skb);
|
|
}
|
|
|
|
/* icmp (big data) and ip segmentation packets (all other ip
|
|
packets) do not require any special handling */
|
|
|
|
} else {
|
|
/* Other Ethernet Protocol */
|
|
swqe->tx_control |= EHEA_SWQE_CRC
|
|
| EHEA_SWQE_IMM_DATA_PRESENT
|
|
| EHEA_SWQE_DESCRIPTORS_PRESENT;
|
|
}
|
|
|
|
write_swqe2_data(skb, dev, swqe, lkey);
|
|
}
|
|
|
|
static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
|
|
struct ehea_swqe *swqe)
|
|
{
|
|
int nfrags = skb_shinfo(skb)->nr_frags;
|
|
u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
|
|
skb_frag_t *frag;
|
|
int i;
|
|
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
/* IPv4 */
|
|
write_ip_start_end(swqe, skb);
|
|
|
|
if (skb->nh.iph->protocol == IPPROTO_TCP) {
|
|
swqe->tx_control |= EHEA_SWQE_CRC
|
|
| EHEA_SWQE_IP_CHECKSUM
|
|
| EHEA_SWQE_TCP_CHECKSUM
|
|
| EHEA_SWQE_IMM_DATA_PRESENT;
|
|
|
|
write_tcp_offset_end(swqe, skb);
|
|
|
|
} else if (skb->nh.iph->protocol == IPPROTO_UDP) {
|
|
if ((skb->nh.iph->frag_off & IP_MF) ||
|
|
(skb->nh.iph->frag_off & IP_OFFSET))
|
|
/* IP fragment, so don't change cs */
|
|
swqe->tx_control |= EHEA_SWQE_CRC
|
|
| EHEA_SWQE_IMM_DATA_PRESENT;
|
|
else {
|
|
swqe->tx_control |= EHEA_SWQE_CRC
|
|
| EHEA_SWQE_IP_CHECKSUM
|
|
| EHEA_SWQE_TCP_CHECKSUM
|
|
| EHEA_SWQE_IMM_DATA_PRESENT;
|
|
|
|
write_udp_offset_end(swqe, skb);
|
|
}
|
|
} else {
|
|
/* icmp (big data) and
|
|
ip segmentation packets (all other ip packets) */
|
|
swqe->tx_control |= EHEA_SWQE_CRC
|
|
| EHEA_SWQE_IP_CHECKSUM
|
|
| EHEA_SWQE_IMM_DATA_PRESENT;
|
|
}
|
|
} else {
|
|
/* Other Ethernet Protocol */
|
|
swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
|
|
}
|
|
/* copy (immediate) data */
|
|
if (nfrags == 0) {
|
|
/* data is in a single piece */
|
|
memcpy(imm_data, skb->data, skb->len);
|
|
} else {
|
|
/* first copy data from the skb->data buffer ... */
|
|
memcpy(imm_data, skb->data, skb->len - skb->data_len);
|
|
imm_data += skb->len - skb->data_len;
|
|
|
|
/* ... then copy data from the fragments */
|
|
for (i = 0; i < nfrags; i++) {
|
|
frag = &skb_shinfo(skb)->frags[i];
|
|
memcpy(imm_data,
|
|
page_address(frag->page) + frag->page_offset,
|
|
frag->size);
|
|
imm_data += frag->size;
|
|
}
|
|
}
|
|
swqe->immediate_data_length = skb->len;
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct ehea_swqe *swqe;
|
|
unsigned long flags;
|
|
u32 lkey;
|
|
int swqe_index;
|
|
struct ehea_port_res *pr = &port->port_res[0];
|
|
|
|
spin_lock(&pr->xmit_lock);
|
|
|
|
swqe = ehea_get_swqe(pr->qp, &swqe_index);
|
|
memset(swqe, 0, SWQE_HEADER_SIZE);
|
|
atomic_dec(&pr->swqe_avail);
|
|
|
|
if (skb->len <= SWQE3_MAX_IMM) {
|
|
u32 sig_iv = port->sig_comp_iv;
|
|
u32 swqe_num = pr->swqe_id_counter;
|
|
ehea_xmit3(skb, dev, swqe);
|
|
swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
|
|
| EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
|
|
if (pr->swqe_ll_count >= (sig_iv - 1)) {
|
|
swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
|
|
sig_iv);
|
|
swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
|
|
pr->swqe_ll_count = 0;
|
|
} else
|
|
pr->swqe_ll_count += 1;
|
|
} else {
|
|
swqe->wr_id =
|
|
EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
|
|
| EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
|
|
| EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
|
|
pr->sq_skba.arr[pr->sq_skba.index] = skb;
|
|
|
|
pr->sq_skba.index++;
|
|
pr->sq_skba.index &= (pr->sq_skba.len - 1);
|
|
|
|
lkey = pr->send_mr.lkey;
|
|
ehea_xmit2(skb, dev, swqe, lkey);
|
|
|
|
if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
|
|
swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
|
|
EHEA_SIG_IV_LONG);
|
|
swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
|
|
pr->swqe_count = 0;
|
|
} else
|
|
pr->swqe_count += 1;
|
|
}
|
|
pr->swqe_id_counter += 1;
|
|
|
|
if (port->vgrp && vlan_tx_tag_present(skb)) {
|
|
swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
|
|
swqe->vlan_tag = vlan_tx_tag_get(skb);
|
|
}
|
|
|
|
if (netif_msg_tx_queued(port)) {
|
|
ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
|
|
ehea_dump(swqe, 512, "swqe");
|
|
}
|
|
|
|
ehea_post_swqe(pr->qp, swqe);
|
|
pr->tx_packets++;
|
|
|
|
if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
|
|
spin_lock_irqsave(&pr->netif_queue, flags);
|
|
if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
|
|
netif_stop_queue(dev);
|
|
pr->queue_stopped = 1;
|
|
}
|
|
spin_unlock_irqrestore(&pr->netif_queue, flags);
|
|
}
|
|
dev->trans_start = jiffies;
|
|
spin_unlock(&pr->xmit_lock);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static void ehea_vlan_rx_register(struct net_device *dev,
|
|
struct vlan_group *grp)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct ehea_adapter *adapter = port->adapter;
|
|
struct hcp_ehea_port_cb1 *cb1;
|
|
u64 hret;
|
|
|
|
port->vgrp = grp;
|
|
|
|
cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb1) {
|
|
ehea_error("no mem for cb1");
|
|
goto out;
|
|
}
|
|
|
|
if (grp)
|
|
memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
|
|
else
|
|
memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
|
|
|
|
hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
|
|
H_PORT_CB1, H_PORT_CB1_ALL, cb1);
|
|
if (hret != H_SUCCESS)
|
|
ehea_error("modify_ehea_port failed");
|
|
|
|
kfree(cb1);
|
|
out:
|
|
return;
|
|
}
|
|
|
|
static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct ehea_adapter *adapter = port->adapter;
|
|
struct hcp_ehea_port_cb1 *cb1;
|
|
int index;
|
|
u64 hret;
|
|
|
|
cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb1) {
|
|
ehea_error("no mem for cb1");
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
|
|
H_PORT_CB1, H_PORT_CB1_ALL, cb1);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("query_ehea_port failed");
|
|
goto out;
|
|
}
|
|
|
|
index = (vid / 64);
|
|
cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
|
|
|
|
hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
|
|
H_PORT_CB1, H_PORT_CB1_ALL, cb1);
|
|
if (hret != H_SUCCESS)
|
|
ehea_error("modify_ehea_port failed");
|
|
out:
|
|
kfree(cb1);
|
|
return;
|
|
}
|
|
|
|
static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
struct ehea_adapter *adapter = port->adapter;
|
|
struct hcp_ehea_port_cb1 *cb1;
|
|
int index;
|
|
u64 hret;
|
|
|
|
if (port->vgrp)
|
|
port->vgrp->vlan_devices[vid] = NULL;
|
|
|
|
cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb1) {
|
|
ehea_error("no mem for cb1");
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
|
|
H_PORT_CB1, H_PORT_CB1_ALL, cb1);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("query_ehea_port failed");
|
|
goto out;
|
|
}
|
|
|
|
index = (vid / 64);
|
|
cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
|
|
|
|
hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
|
|
H_PORT_CB1, H_PORT_CB1_ALL, cb1);
|
|
if (hret != H_SUCCESS)
|
|
ehea_error("modify_ehea_port failed");
|
|
out:
|
|
kfree(cb1);
|
|
return;
|
|
}
|
|
|
|
int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
|
|
{
|
|
int ret = -EIO;
|
|
u64 hret;
|
|
u16 dummy16 = 0;
|
|
u64 dummy64 = 0;
|
|
struct hcp_modify_qp_cb0* cb0;
|
|
|
|
cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb0) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
|
|
EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("query_ehea_qp failed (1)");
|
|
goto out;
|
|
}
|
|
|
|
cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
|
|
hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
|
|
EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
|
|
&dummy64, &dummy64, &dummy16, &dummy16);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("modify_ehea_qp failed (1)");
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
|
|
EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("query_ehea_qp failed (2)");
|
|
goto out;
|
|
}
|
|
|
|
cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
|
|
hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
|
|
EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
|
|
&dummy64, &dummy64, &dummy16, &dummy16);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("modify_ehea_qp failed (2)");
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
|
|
EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("query_ehea_qp failed (3)");
|
|
goto out;
|
|
}
|
|
|
|
cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
|
|
hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
|
|
EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
|
|
&dummy64, &dummy64, &dummy16, &dummy16);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("modify_ehea_qp failed (3)");
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
|
|
EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("query_ehea_qp failed (4)");
|
|
goto out;
|
|
}
|
|
|
|
ret = 0;
|
|
out:
|
|
kfree(cb0);
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
|
|
int add_tx_qps)
|
|
{
|
|
int ret, i;
|
|
struct port_res_cfg pr_cfg, pr_cfg_small_rx;
|
|
enum ehea_eq_type eq_type = EHEA_EQ;
|
|
|
|
port->qp_eq = ehea_create_eq(port->adapter, eq_type,
|
|
EHEA_MAX_ENTRIES_EQ, 1);
|
|
if (!port->qp_eq) {
|
|
ret = -EINVAL;
|
|
ehea_error("ehea_create_eq failed (qp_eq)");
|
|
goto out_kill_eq;
|
|
}
|
|
|
|
pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
|
|
pr_cfg.max_entries_scq = sq_entries;
|
|
pr_cfg.max_entries_sq = sq_entries;
|
|
pr_cfg.max_entries_rq1 = rq1_entries;
|
|
pr_cfg.max_entries_rq2 = rq2_entries;
|
|
pr_cfg.max_entries_rq3 = rq3_entries;
|
|
|
|
pr_cfg_small_rx.max_entries_rcq = 1;
|
|
pr_cfg_small_rx.max_entries_scq = sq_entries;
|
|
pr_cfg_small_rx.max_entries_sq = sq_entries;
|
|
pr_cfg_small_rx.max_entries_rq1 = 1;
|
|
pr_cfg_small_rx.max_entries_rq2 = 1;
|
|
pr_cfg_small_rx.max_entries_rq3 = 1;
|
|
|
|
for (i = 0; i < def_qps; i++) {
|
|
ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
|
|
if (ret)
|
|
goto out_clean_pr;
|
|
}
|
|
for (i = def_qps; i < def_qps + add_tx_qps; i++) {
|
|
ret = ehea_init_port_res(port, &port->port_res[i],
|
|
&pr_cfg_small_rx, i);
|
|
if (ret)
|
|
goto out_clean_pr;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_clean_pr:
|
|
while (--i >= 0)
|
|
ehea_clean_portres(port, &port->port_res[i]);
|
|
|
|
out_kill_eq:
|
|
ehea_destroy_eq(port->qp_eq);
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_clean_all_portres(struct ehea_port *port)
|
|
{
|
|
int ret = 0;
|
|
int i;
|
|
|
|
for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
|
|
ret |= ehea_clean_portres(port, &port->port_res[i]);
|
|
|
|
ret |= ehea_destroy_eq(port->qp_eq);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_up(struct net_device *dev)
|
|
{
|
|
int ret, i;
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
u64 mac_addr = 0;
|
|
|
|
if (port->state == EHEA_PORT_UP)
|
|
return 0;
|
|
|
|
ret = ehea_port_res_setup(port, port->num_def_qps,
|
|
port->num_add_tx_qps);
|
|
if (ret) {
|
|
ehea_error("port_res_failed");
|
|
goto out;
|
|
}
|
|
|
|
/* Set default QP for this port */
|
|
ret = ehea_configure_port(port);
|
|
if (ret) {
|
|
ehea_error("ehea_configure_port failed. ret:%d", ret);
|
|
goto out_clean_pr;
|
|
}
|
|
|
|
ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
|
|
if (ret) {
|
|
ret = -EIO;
|
|
ehea_error("out_clean_pr");
|
|
goto out_clean_pr;
|
|
}
|
|
mac_addr = (*(u64*)dev->dev_addr) >> 16;
|
|
|
|
ret = ehea_reg_interrupts(dev);
|
|
if (ret) {
|
|
ehea_error("out_dereg_bc");
|
|
goto out_dereg_bc;
|
|
}
|
|
|
|
for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
|
|
ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
|
|
if (ret) {
|
|
ehea_error("activate_qp failed");
|
|
goto out_free_irqs;
|
|
}
|
|
}
|
|
|
|
for(i = 0; i < port->num_def_qps; i++) {
|
|
ret = ehea_fill_port_res(&port->port_res[i]);
|
|
if (ret) {
|
|
ehea_error("out_free_irqs");
|
|
goto out_free_irqs;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
port->state = EHEA_PORT_UP;
|
|
goto out;
|
|
|
|
out_free_irqs:
|
|
ehea_free_interrupts(dev);
|
|
|
|
out_dereg_bc:
|
|
ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
|
|
|
|
out_clean_pr:
|
|
ehea_clean_all_portres(port);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_open(struct net_device *dev)
|
|
{
|
|
int ret;
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
|
|
down(&port->port_lock);
|
|
|
|
if (netif_msg_ifup(port))
|
|
ehea_info("enabling port %s", dev->name);
|
|
|
|
ret = ehea_up(dev);
|
|
if (!ret)
|
|
netif_start_queue(dev);
|
|
|
|
up(&port->port_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_down(struct net_device *dev)
|
|
{
|
|
int ret, i;
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
|
|
if (port->state == EHEA_PORT_DOWN)
|
|
return 0;
|
|
|
|
ehea_drop_multicast_list(dev);
|
|
ehea_free_interrupts(dev);
|
|
|
|
for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
|
|
tasklet_kill(&port->port_res[i].send_comp_task);
|
|
|
|
ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
|
|
ret = ehea_clean_all_portres(port);
|
|
port->state = EHEA_PORT_DOWN;
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_stop(struct net_device *dev)
|
|
{
|
|
int ret;
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
|
|
if (netif_msg_ifdown(port))
|
|
ehea_info("disabling port %s", dev->name);
|
|
|
|
flush_workqueue(port->adapter->ehea_wq);
|
|
down(&port->port_lock);
|
|
netif_stop_queue(dev);
|
|
ret = ehea_down(dev);
|
|
up(&port->port_lock);
|
|
return ret;
|
|
}
|
|
|
|
static void ehea_reset_port(struct work_struct *work)
|
|
{
|
|
int ret;
|
|
struct ehea_port *port =
|
|
container_of(work, struct ehea_port, reset_task);
|
|
struct net_device *dev = port->netdev;
|
|
|
|
port->resets++;
|
|
down(&port->port_lock);
|
|
netif_stop_queue(dev);
|
|
netif_poll_disable(dev);
|
|
|
|
ret = ehea_down(dev);
|
|
if (ret)
|
|
ehea_error("ehea_down failed. not all resources are freed");
|
|
|
|
ret = ehea_up(dev);
|
|
if (ret) {
|
|
ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
|
|
goto out;
|
|
}
|
|
|
|
if (netif_msg_timer(port))
|
|
ehea_info("Device %s resetted successfully", dev->name);
|
|
|
|
netif_poll_enable(dev);
|
|
netif_wake_queue(dev);
|
|
out:
|
|
up(&port->port_lock);
|
|
return;
|
|
}
|
|
|
|
static void ehea_tx_watchdog(struct net_device *dev)
|
|
{
|
|
struct ehea_port *port = netdev_priv(dev);
|
|
|
|
if (netif_carrier_ok(dev))
|
|
queue_work(port->adapter->ehea_wq, &port->reset_task);
|
|
}
|
|
|
|
int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
|
|
{
|
|
struct hcp_query_ehea *cb;
|
|
struct device_node *lhea_dn = NULL;
|
|
struct device_node *eth_dn = NULL;
|
|
u64 hret;
|
|
int ret;
|
|
|
|
cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
hret = ehea_h_query_ehea(adapter->handle, cb);
|
|
|
|
if (hret != H_SUCCESS) {
|
|
ret = -EIO;
|
|
goto out_herr;
|
|
}
|
|
|
|
/* Determine the number of available logical ports
|
|
* by counting the child nodes of the lhea OFDT entry
|
|
*/
|
|
adapter->num_ports = 0;
|
|
lhea_dn = of_find_node_by_name(lhea_dn, "lhea");
|
|
do {
|
|
eth_dn = of_get_next_child(lhea_dn, eth_dn);
|
|
if (eth_dn)
|
|
adapter->num_ports++;
|
|
} while ( eth_dn );
|
|
of_node_put(lhea_dn);
|
|
|
|
adapter->max_mc_mac = cb->max_mc_mac - 1;
|
|
ret = 0;
|
|
|
|
out_herr:
|
|
kfree(cb);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_setup_single_port(struct ehea_port *port,
|
|
struct device_node *dn)
|
|
{
|
|
int ret;
|
|
u64 hret;
|
|
struct net_device *dev = port->netdev;
|
|
struct ehea_adapter *adapter = port->adapter;
|
|
struct hcp_ehea_port_cb4 *cb4;
|
|
u32 *dn_log_port_id;
|
|
int jumbo = 0;
|
|
|
|
sema_init(&port->port_lock, 1);
|
|
port->state = EHEA_PORT_DOWN;
|
|
port->sig_comp_iv = sq_entries / 10;
|
|
|
|
if (!dn) {
|
|
ehea_error("bad device node: dn=%p", dn);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
port->of_dev_node = dn;
|
|
|
|
/* Determine logical port id */
|
|
dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL);
|
|
|
|
if (!dn_log_port_id) {
|
|
ehea_error("bad device node: dn_log_port_id=%p",
|
|
dn_log_port_id);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
port->logical_port_id = *dn_log_port_id;
|
|
|
|
port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
|
|
if (!port->mc_list) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&port->mc_list->list);
|
|
|
|
ret = ehea_sense_port_attr(port);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* Enable Jumbo frames */
|
|
cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!cb4) {
|
|
ehea_error("no mem for cb4");
|
|
} else {
|
|
hret = ehea_h_query_ehea_port(adapter->handle,
|
|
port->logical_port_id,
|
|
H_PORT_CB4,
|
|
H_PORT_CB4_JUMBO, cb4);
|
|
|
|
if (hret == H_SUCCESS) {
|
|
if (cb4->jumbo_frame)
|
|
jumbo = 1;
|
|
else {
|
|
cb4->jumbo_frame = 1;
|
|
hret = ehea_h_modify_ehea_port(adapter->handle,
|
|
port->
|
|
logical_port_id,
|
|
H_PORT_CB4,
|
|
H_PORT_CB4_JUMBO,
|
|
cb4);
|
|
if (hret == H_SUCCESS)
|
|
jumbo = 1;
|
|
}
|
|
}
|
|
kfree(cb4);
|
|
}
|
|
|
|
/* initialize net_device structure */
|
|
SET_MODULE_OWNER(dev);
|
|
|
|
memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
|
|
|
|
dev->open = ehea_open;
|
|
dev->poll = ehea_poll;
|
|
dev->weight = 64;
|
|
dev->stop = ehea_stop;
|
|
dev->hard_start_xmit = ehea_start_xmit;
|
|
dev->get_stats = ehea_get_stats;
|
|
dev->set_multicast_list = ehea_set_multicast_list;
|
|
dev->set_mac_address = ehea_set_mac_addr;
|
|
dev->change_mtu = ehea_change_mtu;
|
|
dev->vlan_rx_register = ehea_vlan_rx_register;
|
|
dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
|
|
dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
|
|
dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
|
|
| NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
|
|
| NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
|
|
| NETIF_F_LLTX;
|
|
dev->tx_timeout = &ehea_tx_watchdog;
|
|
dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
|
|
|
|
INIT_WORK(&port->reset_task, ehea_reset_port);
|
|
|
|
ehea_set_ethtool_ops(dev);
|
|
|
|
ret = register_netdev(dev);
|
|
if (ret) {
|
|
ehea_error("register_netdev failed. ret=%d", ret);
|
|
goto out_free;
|
|
}
|
|
|
|
ehea_info("%s: Jumbo frames are %sabled", dev->name,
|
|
jumbo == 1 ? "en" : "dis");
|
|
|
|
port->netdev = dev;
|
|
ret = 0;
|
|
goto out;
|
|
|
|
out_free:
|
|
kfree(port->mc_list);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int ehea_setup_ports(struct ehea_adapter *adapter)
|
|
{
|
|
int ret;
|
|
int port_setup_ok = 0;
|
|
struct ehea_port *port;
|
|
struct device_node *dn = NULL;
|
|
struct net_device *dev;
|
|
int i;
|
|
|
|
/* get port properties for all ports */
|
|
for (i = 0; i < adapter->num_ports; i++) {
|
|
|
|
if (adapter->port[i])
|
|
continue; /* port already up and running */
|
|
|
|
/* allocate memory for the port structures */
|
|
dev = alloc_etherdev(sizeof(struct ehea_port));
|
|
|
|
if (!dev) {
|
|
ehea_error("no mem for net_device");
|
|
break;
|
|
}
|
|
|
|
port = netdev_priv(dev);
|
|
port->adapter = adapter;
|
|
port->netdev = dev;
|
|
adapter->port[i] = port;
|
|
port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
|
|
|
|
dn = of_find_node_by_name(dn, "ethernet");
|
|
ret = ehea_setup_single_port(port, dn);
|
|
if (ret) {
|
|
/* Free mem for this port struct. The others will be
|
|
processed on rollback */
|
|
free_netdev(dev);
|
|
adapter->port[i] = NULL;
|
|
ehea_error("eHEA port %d setup failed, ret=%d", i, ret);
|
|
}
|
|
}
|
|
|
|
of_node_put(dn);
|
|
|
|
/* Check for succesfully set up ports */
|
|
for (i = 0; i < adapter->num_ports; i++)
|
|
if (adapter->port[i])
|
|
port_setup_ok++;
|
|
|
|
if (port_setup_ok)
|
|
ret = 0; /* At least some ports are setup correctly */
|
|
else
|
|
ret = -EINVAL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __devinit ehea_probe(struct ibmebus_dev *dev,
|
|
const struct of_device_id *id)
|
|
{
|
|
struct ehea_adapter *adapter;
|
|
u64 *adapter_handle;
|
|
int ret;
|
|
|
|
adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
|
|
if (!adapter) {
|
|
ret = -ENOMEM;
|
|
dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
|
|
goto out;
|
|
}
|
|
|
|
adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
|
|
NULL);
|
|
if (adapter_handle)
|
|
adapter->handle = *adapter_handle;
|
|
|
|
if (!adapter->handle) {
|
|
dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
|
|
" '%s'\n", dev->ofdev.node->full_name);
|
|
ret = -ENODEV;
|
|
goto out_free_ad;
|
|
}
|
|
|
|
adapter->pd = EHEA_PD_ID;
|
|
|
|
dev->ofdev.dev.driver_data = adapter;
|
|
|
|
ret = ehea_reg_mr_adapter(adapter);
|
|
if (ret) {
|
|
dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
|
|
goto out_free_ad;
|
|
}
|
|
|
|
/* initialize adapter and ports */
|
|
/* get adapter properties */
|
|
ret = ehea_sense_adapter_attr(adapter);
|
|
if (ret) {
|
|
dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
|
|
goto out_free_res;
|
|
}
|
|
dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports);
|
|
|
|
adapter->neq = ehea_create_eq(adapter,
|
|
EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
|
|
if (!adapter->neq) {
|
|
dev_err(&dev->ofdev.dev, "NEQ creation failed");
|
|
goto out_free_res;
|
|
}
|
|
|
|
tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
|
|
(unsigned long)adapter);
|
|
|
|
ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
|
|
ehea_interrupt_neq, IRQF_DISABLED,
|
|
"ehea_neq", adapter);
|
|
if (ret) {
|
|
dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
|
|
goto out_kill_eq;
|
|
}
|
|
|
|
adapter->ehea_wq = create_workqueue("ehea_wq");
|
|
if (!adapter->ehea_wq)
|
|
goto out_free_irq;
|
|
|
|
ret = ehea_setup_ports(adapter);
|
|
if (ret) {
|
|
dev_err(&dev->ofdev.dev, "setup_ports failed");
|
|
goto out_kill_wq;
|
|
}
|
|
|
|
ret = 0;
|
|
goto out;
|
|
|
|
out_kill_wq:
|
|
destroy_workqueue(adapter->ehea_wq);
|
|
|
|
out_free_irq:
|
|
ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
|
|
|
|
out_kill_eq:
|
|
ehea_destroy_eq(adapter->neq);
|
|
|
|
out_free_res:
|
|
ehea_h_free_resource(adapter->handle, adapter->mr.handle);
|
|
|
|
out_free_ad:
|
|
kfree(adapter);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void ehea_shutdown_single_port(struct ehea_port *port)
|
|
{
|
|
unregister_netdev(port->netdev);
|
|
kfree(port->mc_list);
|
|
free_netdev(port->netdev);
|
|
}
|
|
|
|
static int __devexit ehea_remove(struct ibmebus_dev *dev)
|
|
{
|
|
struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
|
|
u64 hret;
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_ports; i++)
|
|
if (adapter->port[i]) {
|
|
ehea_shutdown_single_port(adapter->port[i]);
|
|
adapter->port[i] = NULL;
|
|
}
|
|
destroy_workqueue(adapter->ehea_wq);
|
|
|
|
ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
|
|
tasklet_kill(&adapter->neq_tasklet);
|
|
|
|
ehea_destroy_eq(adapter->neq);
|
|
|
|
hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
|
|
if (hret) {
|
|
dev_err(&dev->ofdev.dev, "free_resource_mr failed");
|
|
return -EIO;
|
|
}
|
|
kfree(adapter);
|
|
return 0;
|
|
}
|
|
|
|
static int check_module_parm(void)
|
|
{
|
|
int ret = 0;
|
|
|
|
if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
|
|
(rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
|
|
ehea_info("Bad parameter: rq1_entries");
|
|
ret = -EINVAL;
|
|
}
|
|
if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
|
|
(rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
|
|
ehea_info("Bad parameter: rq2_entries");
|
|
ret = -EINVAL;
|
|
}
|
|
if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
|
|
(rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
|
|
ehea_info("Bad parameter: rq3_entries");
|
|
ret = -EINVAL;
|
|
}
|
|
if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
|
|
(sq_entries > EHEA_MAX_ENTRIES_SQ)) {
|
|
ehea_info("Bad parameter: sq_entries");
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct of_device_id ehea_device_table[] = {
|
|
{
|
|
.name = "lhea",
|
|
.compatible = "IBM,lhea",
|
|
},
|
|
{},
|
|
};
|
|
|
|
static struct ibmebus_driver ehea_driver = {
|
|
.name = "ehea",
|
|
.id_table = ehea_device_table,
|
|
.probe = ehea_probe,
|
|
.remove = ehea_remove,
|
|
};
|
|
|
|
int __init ehea_module_init(void)
|
|
{
|
|
int ret;
|
|
|
|
printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
|
|
DRV_VERSION);
|
|
|
|
ret = check_module_parm();
|
|
if (ret)
|
|
goto out;
|
|
ret = ibmebus_register_driver(&ehea_driver);
|
|
if (ret)
|
|
ehea_error("failed registering eHEA device driver on ebus");
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit ehea_module_exit(void)
|
|
{
|
|
ibmebus_unregister_driver(&ehea_driver);
|
|
}
|
|
|
|
module_init(ehea_module_init);
|
|
module_exit(ehea_module_exit);
|