--- /dev/null
+/*
+ * linux/drivers/net/ehea/ehea_main.c
+ *
+ * eHEA ethernet device driver for IBM eServer System p
+ *
+ * (C) Copyright IBM Corp. 2006
+ *
+ * Authors:
+ * Christoph Raisch <raisch@de.ibm.com>
+ * Jan-Bernd Themann <themann@de.ibm.com>
+ * Thomas Klein <tklein@de.ibm.com>
+ *
+ *
+ * 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, or (at your option)
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/if.h>
+#include <linux/list.h>
+#include <linux/if_ether.h>
+#include <net/ip.h>
+
+#include "ehea.h"
+#include "ehea_qmr.h"
+#include "ehea_phyp.h"
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
+MODULE_DESCRIPTION("IBM eServer HEA Driver");
+MODULE_VERSION(DRV_VERSION);
+
+
+static int msg_level = -1;
+static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
+static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
+static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
+static int sq_entries = EHEA_DEF_ENTRIES_SQ;
+
+module_param(msg_level, int, 0);
+module_param(rq1_entries, int, 0);
+module_param(rq2_entries, int, 0);
+module_param(rq3_entries, int, 0);
+module_param(sq_entries, int, 0);
+
+MODULE_PARM_DESC(msg_level, "msg_level");
+MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
+ "[2^x - 1], x = [6..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
+MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
+ "[2^x - 1], x = [6..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
+MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
+ "[2^x - 1], x = [6..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
+MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
+ "[2^x - 1], x = [6..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
+
+void ehea_dump(void *adr, int len, char *msg) {
+ int x;
+ unsigned char *deb = adr;
+ for (x = 0; x < len; x += 16) {
+ printk(DRV_NAME "%s adr=%p ofs=%04x %016lx %016lx\n", msg,
+ deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
+ deb += 16;
+ }
+}
+
+static struct net_device_stats *ehea_get_stats(struct net_device *dev)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct net_device_stats *stats = &port->stats;
+ struct hcp_ehea_port_cb2 *cb2;
+ u64 hret, rx_packets;
+ int i;
+
+ memset(stats, 0, sizeof(*stats));
+
+ cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!cb2) {
+ ehea_error("no mem for cb2");
+ goto out;
+ }
+
+ hret = ehea_h_query_ehea_port(port->adapter->handle,
+ port->logical_port_id,
+ H_PORT_CB2, H_PORT_CB2_ALL, cb2);
+ if (hret != H_SUCCESS) {
+ ehea_error("query_ehea_port failed");
+ goto out_herr;
+ }
+
+ if (netif_msg_hw(port))
+ ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
+
+ rx_packets = 0;
+ for (i = 0; i < port->num_def_qps; i++)
+ rx_packets += port->port_res[i].rx_packets;
+
+ stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
+ stats->multicast = cb2->rxmcp;
+ stats->rx_errors = cb2->rxuerr;
+ stats->rx_bytes = cb2->rxo;
+ stats->tx_bytes = cb2->txo;
+ stats->rx_packets = rx_packets;
+
+out_herr:
+ kfree(cb2);
+out:
+ return stats;
+}
+
+static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
+{
+ struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
+ struct net_device *dev = pr->port->netdev;
+ int max_index_mask = pr->rq1_skba.len - 1;
+ int i;
+
+ if (!nr_of_wqes)
+ return;
+
+ for (i = 0; i < nr_of_wqes; i++) {
+ if (!skb_arr_rq1[index]) {
+ skb_arr_rq1[index] = netdev_alloc_skb(dev,
+ EHEA_L_PKT_SIZE);
+ if (!skb_arr_rq1[index]) {
+ ehea_error("%s: no mem for skb/%d wqes filled",
+ dev->name, i);
+ break;
+ }
+ }
+ index--;
+ index &= max_index_mask;
+ }
+ /* Ring doorbell */
+ ehea_update_rq1a(pr->qp, i);
+}
+
+static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
+{
+ int ret = 0;
+ struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
+ struct net_device *dev = pr->port->netdev;
+ int i;
+
+ for (i = 0; i < pr->rq1_skba.len; i++) {
+ skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
+ if (!skb_arr_rq1[i]) {
+ ehea_error("%s: no mem for skb/%d wqes filled",
+ dev->name, i);
+ ret = -ENOMEM;
+ goto out;
+ }
+ }
+ /* Ring doorbell */
+ ehea_update_rq1a(pr->qp, nr_rq1a);
+out:
+ return ret;
+}
+
+static int ehea_refill_rq_def(struct ehea_port_res *pr,
+ struct ehea_q_skb_arr *q_skba, int rq_nr,
+ int num_wqes, int wqe_type, int packet_size)
+{
+ struct net_device *dev = pr->port->netdev;
+ struct ehea_qp *qp = pr->qp;
+ struct sk_buff **skb_arr = q_skba->arr;
+ struct ehea_rwqe *rwqe;
+ int i, index, max_index_mask, fill_wqes;
+ int ret = 0;
+
+ fill_wqes = q_skba->os_skbs + num_wqes;
+
+ if (!fill_wqes)
+ return ret;
+
+ index = q_skba->index;
+ max_index_mask = q_skba->len - 1;
+ for (i = 0; i < fill_wqes; i++) {
+ struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
+ if (!skb) {
+ ehea_error("%s: no mem for skb/%d wqes filled",
+ dev->name, i);
+ q_skba->os_skbs = fill_wqes - i;
+ ret = -ENOMEM;
+ break;
+ }
+ skb_reserve(skb, NET_IP_ALIGN);
+
+ skb_arr[index] = skb;
+
+ rwqe = ehea_get_next_rwqe(qp, rq_nr);
+ rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
+ | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
+ rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
+ rwqe->sg_list[0].vaddr = (u64)skb->data;
+ rwqe->sg_list[0].len = packet_size;
+ rwqe->data_segments = 1;
+
+ index++;
+ index &= max_index_mask;
+ }
+ q_skba->index = index;
+
+ /* Ring doorbell */
+ iosync();
+ if (rq_nr == 2)
+ ehea_update_rq2a(pr->qp, i);
+ else
+ ehea_update_rq3a(pr->qp, i);
+
+ return ret;
+}
+
+
+static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
+{
+ return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
+ nr_of_wqes, EHEA_RWQE2_TYPE,
+ EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
+}
+
+
+static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
+{
+ return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
+ nr_of_wqes, EHEA_RWQE3_TYPE,
+ EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
+}
+
+static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
+{
+ *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
+ if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
+ return 0;
+ if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
+ (cqe->header_length == 0))
+ return 0;
+ return -EINVAL;
+}
+
+static inline void ehea_fill_skb(struct net_device *dev,
+ struct sk_buff *skb, struct ehea_cqe *cqe)
+{
+ int length = cqe->num_bytes_transfered - 4; /*remove CRC */
+
+ skb_put(skb, length);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->protocol = eth_type_trans(skb, dev);
+}
+
+static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
+ int arr_len,
+ struct ehea_cqe *cqe)
+{
+ int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
+ struct sk_buff *skb;
+ void *pref;
+ int x;
+
+ x = skb_index + 1;
+ x &= (arr_len - 1);
+
+ pref = skb_array[x];
+ prefetchw(pref);
+ prefetchw(pref + EHEA_CACHE_LINE);
+
+ pref = (skb_array[x]->data);
+ prefetch(pref);
+ prefetch(pref + EHEA_CACHE_LINE);
+ prefetch(pref + EHEA_CACHE_LINE * 2);
+ prefetch(pref + EHEA_CACHE_LINE * 3);
+ skb = skb_array[skb_index];
+ skb_array[skb_index] = NULL;
+ return skb;
+}
+
+static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
+ int arr_len, int wqe_index)
+{
+ struct sk_buff *skb;
+ void *pref;
+ int x;
+
+ x = wqe_index + 1;
+ x &= (arr_len - 1);
+
+ pref = skb_array[x];
+ prefetchw(pref);
+ prefetchw(pref + EHEA_CACHE_LINE);
+
+ pref = (skb_array[x]->data);
+ prefetchw(pref);
+ prefetchw(pref + EHEA_CACHE_LINE);
+
+ skb = skb_array[wqe_index];
+ skb_array[wqe_index] = NULL;
+ return skb;
+}
+
+static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
+ struct ehea_cqe *cqe, int *processed_rq2,
+ int *processed_rq3)
+{
+ struct sk_buff *skb;
+
+ if (netif_msg_rx_err(pr->port)) {
+ ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
+ ehea_dump(cqe, sizeof(*cqe), "CQE");
+ }
+
+ if (rq == 2) {
+ *processed_rq2 += 1;
+ skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
+ dev_kfree_skb(skb);
+ } else if (rq == 3) {
+ *processed_rq3 += 1;
+ skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
+ dev_kfree_skb(skb);
+ }
+
+ if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
+ ehea_error("Critical receive error. Resetting port.");
+ queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int ehea_poll(struct net_device *dev, int *budget)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct ehea_port_res *pr = &port->port_res[0];
+ struct ehea_qp *qp = pr->qp;
+ struct ehea_cqe *cqe;
+ struct sk_buff *skb;
+ struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
+ struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
+ struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
+ int skb_arr_rq1_len = pr->rq1_skba.len;
+ int skb_arr_rq2_len = pr->rq2_skba.len;
+ int skb_arr_rq3_len = pr->rq3_skba.len;
+ int processed, processed_rq1, processed_rq2, processed_rq3;
+ int wqe_index, last_wqe_index, rq, intreq, my_quota, port_reset;
+
+ processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
+ last_wqe_index = 0;
+ my_quota = min(*budget, dev->quota);
+ my_quota = min(my_quota, EHEA_POLL_MAX_RWQE);
+
+ /* rq0 is low latency RQ */
+ cqe = ehea_poll_rq1(qp, &wqe_index);
+ while ((my_quota > 0) && cqe) {
+ ehea_inc_rq1(qp);
+ processed_rq1++;
+ processed++;
+ my_quota--;
+ if (netif_msg_rx_status(port))
+ ehea_dump(cqe, sizeof(*cqe), "CQE");
+
+ last_wqe_index = wqe_index;
+ rmb();
+ if (!ehea_check_cqe(cqe, &rq)) {
+ if (rq == 1) { /* LL RQ1 */
+ skb = get_skb_by_index_ll(skb_arr_rq1,
+ skb_arr_rq1_len,
+ wqe_index);
+ if (unlikely(!skb)) {
+ if (netif_msg_rx_err(port))
+ ehea_error("LL rq1: skb=NULL");
+ skb = netdev_alloc_skb(dev,
+ EHEA_L_PKT_SIZE);
+ if (!skb)
+ break;
+ }
+ memcpy(skb->data, ((char*)cqe) + 64,
+ cqe->num_bytes_transfered - 4);
+ ehea_fill_skb(dev, skb, cqe);
+ } else if (rq == 2) { /* RQ2 */
+ skb = get_skb_by_index(skb_arr_rq2,
+ skb_arr_rq2_len, cqe);
+ if (unlikely(!skb)) {
+ if (netif_msg_rx_err(port))
+ ehea_error("rq2: skb=NULL");
+ break;
+ }
+ ehea_fill_skb(dev, skb, cqe);
+ processed_rq2++;
+ } else { /* RQ3 */
+ skb = get_skb_by_index(skb_arr_rq3,
+ skb_arr_rq3_len, cqe);
+ if (unlikely(!skb)) {
+ if (netif_msg_rx_err(port))
+ ehea_error("rq3: skb=NULL");
+ break;
+ }
+ ehea_fill_skb(dev, skb, cqe);
+ processed_rq3++;
+ }
+
+ if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
+ vlan_hwaccel_receive_skb(skb, port->vgrp,
+ cqe->vlan_tag);
+ else
+ netif_receive_skb(skb);
+
+ } else { /* Error occured */
+ pr->p_state.poll_receive_errors++;
+ port_reset = ehea_treat_poll_error(pr, rq, cqe,
+ &processed_rq2,
+ &processed_rq3);
+ if (port_reset)
+ break;
+ }
+ cqe = ehea_poll_rq1(qp, &wqe_index);
+ }
+
+ dev->quota -= processed;
+ *budget -= processed;
+
+ pr->p_state.ehea_poll += 1;
+ pr->rx_packets += processed;
+
+ ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
+ ehea_refill_rq2(pr, processed_rq2);
+ ehea_refill_rq3(pr, processed_rq3);
+
+ intreq = ((pr->p_state.ehea_poll & 0xF) == 0xF);
+
+ if (!cqe || intreq) {
+ netif_rx_complete(dev);
+ ehea_reset_cq_ep(pr->recv_cq);
+ ehea_reset_cq_n1(pr->recv_cq);
+ cqe = hw_qeit_get_valid(&qp->hw_rqueue1);
+ if (!cqe || intreq)
+ return 0;
+ if (!netif_rx_reschedule(dev, my_quota))
+ return 0;
+ }
+ return 1;
+}
+
+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;
+ 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);
+ eqe = ehea_poll_eq(port->qp_eq);
+ }
+
+ 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,
+ SA_INTERRUPT, 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,
+ SA_INTERRUPT, 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,
+ SA_INTERRUPT, 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, SA_INTERRUPT,
+ "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);
git://git.onelab.eu / linux-2.6.git / blobdiff